None found as of Jan. 23, 2012.
© 2020 Encyclopaedia Britannica, Inc.
All rights reserved
ProCon.org is the institutional or organization author for all ProCon.org pages. Proper citation depends on your preferred or required style manual. Below are the proper citations for this page according to four style manuals (in alphabetical order): the Modern Language Association Style Manual (MLA), the Chicago Manual of Style (Chicago), the Publication Manual of the American Psychological Association (APA), and Kate Turabian's A Manual for Writers of Term Papers, Theses, and Dissertations (Turabian). Here are the proper bibliographic citations for this page according to four style manuals (in alphabetical order):
[Editor's Note: The APA citation style requires double spacing within entries.]
[Editor’s Note: The MLA citation style requires double spacing within entries.]