Gaya APA

Tuijnman, A., Kamp, M, V, D. (1992). LEARNING ACROSS THE LIFESPAN : Theories, Research, Policies . New York: PERGAMON PRESS.

Gaya MLA

Tuijnman, Albert., Kamp, Max, Van, Der. "LEARNING ACROSS THE LIFESPAN : Theories, Research, Policies". New York: PERGAMON PRESS, 1992. Text.