Gaya APA

LERNER, R, M., Hultsch, D, F. (1983). Human Developmen: A Life - Span Perspective . London: Scott, Foresman and Company.

Gaya MLA

LERNER, Richard, M.., Hultsch, David, F.. "Human Developmen: A Life - Span Perspective". London: Scott, Foresman and Company, 1983. Text.