Citazione Stile APA (7a Edizione)

Ellefson, D., Wallbank, T. W., Taylor, A. M., & Bailkey, N. M. (1975). Civilization: Past and present (7. ed.). Scott, Foresman.

Citazione stile Chigago Style (17a edizione)

Ellefson, Donna, T. Walter Wallbank, Alastair M. Taylor, e Nels M. Bailkey. Civilization: Past and Present. 7. ed. Chicago [u.a.]: Scott, Foresman, 1975.

Citatione MLA (9a ed.)

Ellefson, Donna, et al. Civilization: Past and Present. 7. ed. Scott, Foresman, 1975.