Cita APA (7th ed.)

Packard, V. (1965). The pyramid climbers. Penguin Books.

Cita Chicago (17th ed.)

Packard, Vance. The Pyramid Climbers. Harmondsworth, Mddx.: Penguin Books, 1965.

Cita MLA (8th ed.)

Packard, Vance. The Pyramid Climbers. Penguin Books, 1965.