Cita APA (7th ed.)

Gould, R. L. (1979). Transformations: Growth and change in adult life. Simon & Schuster.

Cita Chicago (17th ed.)

Gould, Roger L. Transformations: Growth and Change in Adult Life. New York: Simon & Schuster, 1979.

Cita MLA (9th ed.)

Gould, Roger L. Transformations: Growth and Change in Adult Life. Simon & Schuster, 1979.