MLA:
The citation style recommended by the Modern Language Association is taken from the MLA Handbook for Writers of Research Papers.
Note: While every effort has been made to follow MLA style rules exactly, there may be some discrepancies. Please refer to the MLA Handbook for Writers of Research Papers if you have any questions.
APA:
The citation style recommended by the American Psychological Association is taken from the APA's Publication Manual, 5th edition. Note: While every effort has been made to follow APA style rules exactly, there may be some discrepancies. Please refer to the APA's Publication Manual, 5th edition if you have any questions.
We welcome your comments. Any revisions or updates suggested for this article will be reviewed by our editorial staff. Contact us here.
Regular users of Britannica may notice that this comments feature is less robust than in the past. This is only temporary, while we make the transition to a dramatically new and richer site. The functionality of the system will be restored soon.