Hoffben, L. (1988). Developmental psychology today. New York: Random House.
Lua i Stíl Chicago (17ú heag.)Hoffben, Lois. Developmental Psychology Today. New York: Random House, 1988.
Lua MLA (9ú heag.)Hoffben, Lois. Developmental Psychology Today. New York: Random House, 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.