Cita APA (7a ed.)

Westermann, D., & Ward, I. C. (1933). Practical phonetics for students of African languages. Published for the International Institute of African Languages & Cultures by Oxford University Press, H. Milford.

Cita Chicago Style (17a ed.)

Westermann, Diedrich, y Ida C. Ward. Practical Phonetics for Students of African Languages. London: Published for the International Institute of African Languages & Cultures by Oxford University Press, H. Milford, 1933.

Cita MLA (8a ed.)

Westermann, Diedrich, y Ida C. Ward. Practical Phonetics for Students of African Languages. Published for the International Institute of African Languages & Cultures by Oxford University Press, H. Milford, 1933.