Bahr, L. S., & Johnston, B. (1993). Collier's Encyclopedia: Lauren S. Bahr, ed. dir. ; Bernard Johnston, ed. in chief. Collier.

Bahr, Lauren S., and Bernard Johnston. Collier's Encyclopedia: Lauren S. Bahr, Ed. Dir. ; Bernard Johnston, Ed. in Chief. New York ; Toronto ; Sydney: Collier, 1993.

Bahr, Lauren S., and Bernard Johnston. Collier's Encyclopedia: Lauren S. Bahr, Ed. Dir. ; Bernard Johnston, Ed. in Chief. Collier, 1993.