Cita APA (7a ed.)

Hrdlicka, A., Holmes, W. H., Willis, B., Wright, F. E., & Fenner, C. N. (1912). Early man in South America. Government Printing Office.

Cita Chicago Style (17a ed.)

Hrdlicka, Ales, W. H. Holmes, Bailey Willis, Fred Eugene Wright, y Clarence N. Fenner. Early Man in South America. Washington, D.C: Government Printing Office, 1912.

Cita MLA (9a ed.)

Hrdlicka, Ales, et al. Early Man in South America. Government Printing Office, 1912.