APA (7th ed.) Citation
Clark, M. M. (1990). The tonal system of Igbo. Foris.
Chicago Style (17th ed.) Citation
Clark, Mary Morris. The Tonal System of Igbo. Dordrecht ; Providence, RI: Foris, 1990.
MLA (9th ed.) Citation
Clark, Mary Morris. The Tonal System of Igbo. Foris, 1990.
Warning: These citations may not always be 100% accurate.