APA Style

Nilsen, Don L.F. (1971). Pronunciation Contrasts in English . New York: Prentice Hall Regents.

Chicago Style

Nilsen, Don L.F. Pronunciation Contrasts in English. New York: Prentice Hall Regents, 1971. Text.

MLA Style

Nilsen, Don L.F. Pronunciation Contrasts in English. New York: Prentice Hall Regents, 1971. Text.

Turabian Style

Nilsen, Don L.F. Pronunciation Contrasts in English. New York: Prentice Hall Regents, 1971. Print.