Cita APA (7a ed.)
(2008 Nov 3). Facts about search engine optimization. American Dental Association News, 39(20), 8-9.
Cita Chicago Style (17a ed.)
"Facts About Search Engine Optimization." American Dental Association News 39, no. 20 (2008 Nov 3): 8-9.
Cita MLA (9a ed.)
"Facts About Search Engine Optimization." American Dental Association News, vol. 39, no. 20, 2008 Nov 3, pp. 8-9.
Precaución: Estas citas no son 100% exactas.