Cita APA (7a ed.)

Sweeney, E. J. (2007). The Pyramid Age. Algora Pub..

Cita Chicago Style (17a ed.)

Sweeney, Emmet John. The Pyramid Age. New York: Algora Pub., 2007.

Cita MLA (9a ed.)

Sweeney, Emmet John. The Pyramid Age. Algora Pub., 2007.