Lua APA (7ú heag.)

HOFFMAN, L. [. a. (1988). Development psychology today.-- Ed.5. McGraw-Hill.

Lua i Stíl Chicago (17ú heag.)

HOFFMAN, Lois [et al]. Development Psychology Today.-- Ed.5. New York: McGraw-Hill, 1988.

Lua MLA (9ú heag.)

HOFFMAN, Lois [et al]. Development Psychology Today.-- Ed.5. McGraw-Hill, 1988.

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