Cita APA (7a ed.)

Wallbank, T. W., Taylor, A. M., & Bailkey, N. M. (1987). Civilization: Past and present (6. ed.). Scott, Foresman.

Cita Chicago Style (17a ed.)

Wallbank, T. Walter, Alastair M. Taylor, y Nels M. Bailkey. Civilization: Past and Present. 6. ed. Chicago [u.a.]: Scott, Foresman, 1987.

Cita MLA (9a ed.)

Wallbank, T. Walter, et al. Civilization: Past and Present. 6. ed. Scott, Foresman, 1987.