Citazione Stile APA (7a Edizione)

Van Royen, W. (1952). Atlas of the world's resources. Prentice-Hall for the University of Maryland.

Citazione stile Chigago Style (17a edizione)

Van Royen, William. Atlas of the World's Resources. New York: Prentice-Hall for the University of Maryland, 1952.

Citatione MLA (9a ed.)

Van Royen, William. Atlas of the World's Resources. Prentice-Hall for the University of Maryland, 1952.