Cita APA (7a ed.)

Ellis, C., Ross, S., & Heater, D. (1989). The United Nations (1. publ.). Wayland.

Cita Chicago Style (17a ed.)

Ellis, Catherine, Stewart Ross, y Derek Heater. The United Nations. 1. publ. Hove: Wayland, 1989.

Cita MLA (9a ed.)

Ellis, Catherine, et al. The United Nations. 1. publ. Wayland, 1989.