Cita APA (7a ed.)

King, F. M. (1981). Understanding the world (2. ed.). Laidlaw.

Cita Chicago Style (17a ed.)

King, Frederick M. Understanding the World. 2. ed. River Forest, Ill. [u.a.]: Laidlaw, 1981.

Cita MLA (9a ed.)

King, Frederick M. Understanding the World. 2. ed. Laidlaw, 1981.