APA (7th ed.) Zitazioa
Gould, R. L. (1979). Transformations: Growth and change in adult life. Simon & Schuster.
Chicago Style (17th ed.) Zitazioa
Gould, Roger L. Transformations: Growth and Change in Adult Life. New York: Simon & Schuster, 1979.
MLA (9th ed.) Zitazioa
Gould, Roger L. Transformations: Growth and Change in Adult Life. Simon & Schuster, 1979.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.