Cita APA (7th ed.)
Seifert, K., & Hoffnung, R. J. (1987). Child and adolescent development. Houghton Mifflin Co..
Cita Chicago (17th ed.)
Seifert, Kelvin, i Robert J. Hoffnung. Child and Adolescent Development. Boston: Houghton Mifflin Co., 1987.
Cita MLA (9th ed.)
Seifert, Kelvin, i Robert J. Hoffnung. Child and Adolescent Development. Houghton Mifflin Co., 1987.
Atenció: Aquestes cites poden no estar 100% correctes.