Cita APA

Krashen, S. D., & Terrell, T. D. (1983). The natural approach: Language acquisition in the classroom. Hayward Calif: Alemany Press.

Citación estilo Chicago

Krashen, Stephen D., y Tracy D. Terrell. The Natural Approach: Language Acquisition in the Classroom. Hayward Calif: Alemany Press, 1983.

Cita MLA

Krashen, Stephen D., y Tracy D. Terrell. The Natural Approach: Language Acquisition in the Classroom. Hayward Calif: Alemany Press, 1983.