MLA

Aguh, Crystal; Okoye, Ginette, and Ginette A Okoye. Fundamentals of Ethnic Hair. Springer International Publishing, 2017.

APA

Aguh, G., & Okoye, G. A. (2017). Fundamentals of Ethnic Hair. Springer International Publishing.

Chicago

Aguh, Crystal; Okoye, Ginette, and Ginette A Okoye. Fundamentals of Ethnic Hair. : Springer International Publishing, 2017.