Cita APA (7a ed.)

Hauck, M. C., MacDougall, K., & Isay, D. (2002). Twelve American voices: An authentic listening and integrated-skills textbook. Yale University Press.

Cita Chicago Style (17a ed.)

Hauck, Maurice Cogan, Kenneth MacDougall, y David Isay. Twelve American Voices: An Authentic Listening and Integrated-skills Textbook. New Haven: Yale University Press, 2002.

Cita MLA (8a ed.)

Hauck, Maurice Cogan, et al. Twelve American Voices: An Authentic Listening and Integrated-skills Textbook. Yale University Press, 2002.