Cita APA (7th ed.)

SHAFFER, D. R. (1985). Developmental psychology: Theory research and application. Brooks/cole.

Cita Chicago (17th ed.)

SHAFFER, David R. Developmental Psychology: Theory Research and Application. Califprnia: Brooks/cole, 1985.

Cita MLA (9th ed.)

SHAFFER, David R. Developmental Psychology: Theory Research and Application. Brooks/cole, 1985.