Cita APA (7th ed.)
Westermann, D. (1990). Practical phonetics for students of African languages. KIP.
Cita Chicago (17th ed.)
Westermann, D. Practical Phonetics for Students of African Languages. London: KIP, 1990.
Cita MLA (9th ed.)
Westermann, D. Practical Phonetics for Students of African Languages. KIP, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.