Cita APA

Birk, N. P., & Birk, G. B. (1958). Understanding and using English. New York: The Odyssey Press.

Chicago Style Citation

Birk, Newman P., i Genevieve B. Birk. Understanding and Using English. New York: The Odyssey Press, 1958.

Cita MLA

Birk, Newman P., i Genevieve B. Birk. Understanding and Using English. New York: The Odyssey Press, 1958.