The most comprehensive of these guides that we recommend you check is the Harvard Business School guide.

General guides

• MBS assignment and referencing guide by Nicole Gillespie, describes the Harvard system (also known as the Author-Date system).
• Citation styles guidelines for the University of Melbourne.
• Citation and style guides, a compilation of various style guides by the Concordia University Libraries.
• Style & citation guides from the David & Lorraine Cheng Library at the William Paterson University of New Jersey.
• Citation style guide from the Australian National University.
• Citation style guide from the University of Western Australia Library.
• Citing sources from Duke University Libraries.
• Nuts & bolts of college writing is an online guide to writing better college essays, including help with style, structure, evidence (including citation styles and citing the internet), and the mechanics of writing.
• The elements of style is a cover-to-cover electronic version of the well known guide to language use.
• EndNote 7: building a bibliography is a guide to downloading records from databases and e-journal collections into your EndNote Library. The guide lists a range of databases and e-journal collections available to the University of Melbourne.
• Style guide from the Economist.
• Harvard Business School: Citation guide for HBS Students

Citing electronic resources

• Citing electronic references, a brief introduction to citing electronic sources using APA, Harvard, Chicago, and MLA from the University of Melbourne Libraries.
• Electronic reference formats recommended by the American Psychological Association. Guide for citing material from the internet, email and electronic databases.
• Citation styles from Online! A Reference Guide to Using Internet Sources.
• Columbia guide to online style from Columbia University Press.
• Citation style guides for internet and electronic sources from the University of Alberta.

Harvard style
(also known as the Author-Date system, this is the system outlined in the Australian guide: Style manual for authors, editors & printers, 6th ed., 2002.)

• Harvard style guide from the University of Queensland.
• Harvard citation style guide from the Australian National University.
• Harvard style guide from the University of Western Australia Library.
• Citing references : the Harvard system from Bournemouth University.
• Harvard style guide from the British Medical Association.
• Harvard referencing guide from the Australian Catholic University

Dictionaries and encyclopedias

• YourDictionary.com indexes on-line dictionaries and thesauri in various languages.
• NetLingo - a dictionary of internet terms used in the online world of business, technology and communication.
• NetDictionary - includes technical, cultural and humorous terms related to the internet.
• Encyclopedia.com contains 17,000 articles. 
• Britannica.com is the free version of the well-known encyclopaedia and contains a searchable database of 72,000 articles and 12,000 images. It also includes Merriam-Webster's Collegiate Dictionary.
• Wikipedia - a free, multilingual open access encyclopedia.
• LibrarySpot.com Dictionaries, encyclopedias, government, maps, articles and more. LibrarySpot.com breaks through the information overload of the Web and brings the best library and reference sites together with insightful editorial in one user-friendly spot. Sites featured on LibrarySpot.com are hand-selected and reviewed by LibrarySpot.com editorial team for their exceptional quality, content and utility.