Cita APA (7th ed.)

Collis, J. S. (1954). The triumph of the tree. The Viking Press.

Cita Chicago (17th ed.)

Collis, John Stewart. The Triumph of the Tree. Nueva York: The Viking Press, 1954.

Cita MLA (9th ed.)

Collis, John Stewart. The Triumph of the Tree. The Viking Press, 1954.