Cita APA

Dunn, V., & Gruber, D. (1987). Listening: Intermediate. New York: Oxford University Press.

Chicago Style Citation

Dunn, Viviane., i Diann Gruber. Listening: Intermediate. New York: Oxford University Press, 1987.

Cita MLA

Dunn, Viviane., i Diann Gruber. Listening: Intermediate. New York: Oxford University Press, 1987.