Cita APA (7th ed.)

Van Royen, W. (1952). The mineral resources of the world. Prentice-Hall, Inc.

Cita Chicago (17th ed.)

Van Royen, William. The Mineral Resources of the World. New York: Prentice-Hall, Inc, 1952.

Cita MLA (9th ed.)

Van Royen, William. The Mineral Resources of the World. Prentice-Hall, Inc, 1952.