Παραπομπή σε μορφή APA (7η εκδ.)

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.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Westermann, Diedrich, και 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.

Παραπομπή σε μορφή MLA (8th εκδ.)

Westermann, Diedrich, και 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.