Cita APA (7a ed.)
Wilcox Peterson, P. (1989). Changing Times, Changing Tenses: <A> Review of the English Tense System. Elementary/Intermediate (1. ed.). U.S. Information Agency.
Cita Chicago Style (17a ed.)
Wilcox Peterson, Patricia. Changing Times, Changing Tenses: <A> Review of the English Tense System. Elementary/Intermediate. 1. ed. Washington: U.S. Information Agency, 1989.
Cita MLA (9a ed.)
Wilcox Peterson, Patricia. Changing Times, Changing Tenses: <A> Review of the English Tense System. Elementary/Intermediate. 1. ed. U.S. Information Agency, 1989.
Precaución: Estas citas no son 100% exactas.