Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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