APA (7th ed.) Citation

Allen, E. D., Sandstedt, L. A., & Wegmann, B. (1976). Habla español?: An introductory course. Holt, Rinehart and Winston.

Chicago Style (17th ed.) Citation

Allen, Edward David, Lynn A. Sandstedt, and Brenda Wegmann. Habla Español?: An Introductory Course. New York: Holt, Rinehart and Winston, 1976.

MLA (9th ed.) Citation

Allen, Edward David, et al. Habla Español?: An Introductory Course. Holt, Rinehart and Winston, 1976.