Cita APA (7th ed.)

Howells, W. W. (1973). Evolution of the genus homo. Addison-Wesley.

Cita Chicago (17th ed.)

Howells, William White. Evolution of the Genus Homo. Reading, Mass: Addison-Wesley, 1973.

Cita MLA (9th ed.)

Howells, William White. Evolution of the Genus Homo. Addison-Wesley, 1973.