Westermann, D., & Ward, I. C. (1964). Practical phonetics for students of African languages. Publication for the International African Institute by the Oxford University Press.
Chicagoスタイル(17版)引用形式Westermann, Diedrich, , Ida Caroline Ward. Practical Phonetics for Students of African Languages. London: Publication for the International African Institute by the Oxford University Press, 1964.
MLA(9版)引用形式Westermann, Diedrich, , Ida Caroline Ward. Practical Phonetics for Students of African Languages. Publication for the International African Institute by the Oxford University Press, 1964.
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