Cita APA (7a ed.)

Knipping, F., & Dietl, R. (1997). The United Nations system and its predecesors. University Press.

Cita Chicago Style (17a ed.)

Knipping, Franz, y Ralph Dietl. The United Nations System and Its Predecesors. Oxford [etc.]: University Press, 1997.

Cita MLA (9a ed.)

Knipping, Franz, y Ralph Dietl. The United Nations System and Its Predecesors. University Press, 1997.