APA (7th ed.) Citation

Greenberg, J. H. (1966). The languages of Africa (2. rev. ed.). Indiana Univ.

Chicago Style (17th ed.) Citation

Greenberg, Joseph Harold. The Languages of Africa. 2. rev. ed. Bloomington: Indiana Univ, 1966.

MLA (9th ed.) Citation

Greenberg, Joseph Harold. The Languages of Africa. 2. rev. ed. Indiana Univ, 1966.