Cita APA (7th ed.)
Thomas, R. M. (1989). Counseling and life-span development. Sage publication.
Cita Chicago (17th ed.)
Thomas, R. Murray. Counseling and Life-span Development. New York: Sage publication, 1989.
Cita MLA (9th ed.)
Thomas, R. Murray. Counseling and Life-span Development. Sage publication, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.