References Works (encyclopedias, Dictionaries, etc...)
References for encyclopedias should include the following elements:
Last name, first name; 
For sources accessed online, include the retrieval date after the title as the entry may change over time. In case the author is not available, the entry of the title will take the place of the author.
Basic format:
Last, First M. “Entry Title.” Work Title. Edited by editor's name(s), Publisher, Publication year, Page range of entry.
Entry in a reference book
Harris, Muriel. “Talk to Me: Engaging Reluctant Writers.” A Tutor's Guide: Helping Writers One to One. Edited by Ben Rafoth, Heinemann, 2000, pp. 24-34.
Multivolume work, with/without editor, volume, and/or edition
Jamieson, Neil L. “Vietnamese.” Encyclopedia of Modern Asia. Edited by David Levinson and Karen Christenson, vol. 6, Scribner's, 2002.
“Ideology.” The American Heritage Dictionary. 3rd ed., 1997.
Entry in a reference work, no author; editor, edition, and volume
“Relativity.” Psychological Terms and Meanings. Edited by Bruce Schulyer. 2nd ed., vol. 35, Bookies, 2005, pp. 235-238.
Entry from an online encyclopedia
“Pollution.” A Dictionary of Environment and Conservation. Edited by Chris Park and Michael Allaby. 3rd ed., Oxford University Press, 1989. Oxford Reference Online, www.oxfordreference.com/view/10.1093/acref/9780191826320.001.0001/acref-9780191826320.
Entry in Wikis (Wikipedia)
Kindly note that Wikis are not recommended for academic research, yet we provided a sample.
Example:
“Plagiarism.” Wikipedia: The Free Encyclopedia. Wikimedia Foundation, Inc., 22 July 2004, en.wikipedia.org/wiki/Plagiarism. Accessed 10 August 2004.