Gaya APA

Nilsen, don L. F.. (1973). Pronunciation contrasts in english . Ney York: Regents Publishing Company.

Gaya Chicago

Nilsen, don L. F.. Pronunciation contrasts in english. Ney York: Regents Publishing Company, 1973. Text.

Gaya MLA

Nilsen, don L. F.. Pronunciation contrasts in english. Ney York: Regents Publishing Company, 1973. Text.

Gaya Turabian

Nilsen, don L. F.. Pronunciation contrasts in english. Ney York: Regents Publishing Company, 1973. Print.