Cita APA

Vogt, E. W., & Vogt, E. W. (2009). Spanish past-tense verbs up close. New York: McGraw-Hill.

Citación estilo Chicago

Vogt, Eric W., y Eric W. Vogt. Spanish Past-tense Verbs Up Close. New York: McGraw-Hill, 2009.

Cita MLA

Vogt, Eric W., y Eric W. Vogt. Spanish Past-tense Verbs Up Close. New York: McGraw-Hill, 2009.