Cita APA (7th ed.)

McClelland, D. C. (1964). The roots of consciousness. Van Nostrand.

Cita Chicago (17th ed.)

McClelland, David Clarence. The Roots of Consciousness. Princeton, N. J: Van Nostrand, 1964.

Cita MLA (9th ed.)

McClelland, David Clarence. The Roots of Consciousness. Van Nostrand, 1964.