Cita APA (7th ed.)
Hughes, F. P., & Noppe, L. D. (1985). Human Development Across the Life Span (ed.). West Publishing Company.
Cita Chicago (17th ed.)
Hughes, Fergus P., i Lloyd D. Noppe. Human Development Across the Life Span. ed. St. Paul, Minnesota: West Publishing Company, 1985.
Cita MLA (9th ed.)
Hughes, Fergus P., i Lloyd D. Noppe. Human Development Across the Life Span. ed. West Publishing Company, 1985.
Atenció: Aquestes cites poden no estar 100% correctes.