Cita APA (7a ed.)

King, F. M. (1981). Understanding regions of the earth (2. ed.). Laidlaw.

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

King, Frederick M. Understanding Regions of the Earth. 2. ed. Laidlaw, 1981.