Cita APA (7a ed.)
Wright, A. L., Barrett, R. P., & Katranides, A. (1973). Let's learn english: Intermediate course. American Book Company.
Cita Chicago Style (17a ed.)
Wright, Audrey L., Ralph P. Barrett, y Aristotle Katranides. Let's Learn English: Intermediate Course. New York: American Book Company, 1973.
Cita MLA (9a ed.)
Wright, Audrey L., et al. Let's Learn English: Intermediate Course. American Book Company, 1973.
Precaución: Estas citas no son 100% exactas.