APA (7th ed.) Citation

Politzer, R. L. (1970). Foreign language learning: A linguistic introduction. Prentice-Hall.

Chicago Style (17th ed.) Citation

Politzer, Robert Louis. Foreign Language Learning: A Linguistic Introduction. Englewood Cliffs, N.J.: Prentice-Hall, 1970.

MLA (9th ed.) Citation

Politzer, Robert Louis. Foreign Language Learning: A Linguistic Introduction. Prentice-Hall, 1970.