Cita APA (7a ed.)

Mussen, P. H. (1979). Psychological development: A life-span approach. Harper & Row.

Cita Chicago Style (17a ed.)

Mussen, Paul Henry. Psychological Development: A Life-span Approach. New York: Harper & Row, 1979.

Cita MLA (9a ed.)

Mussen, Paul Henry. Psychological Development: A Life-span Approach. Harper & Row, 1979.