Lua APA (7ú heag.)

Spencer, T. D., & Kass, N. (1970). Perspectives in child psychology: Research and review. McGraw-Hill.

Lua i Stíl Chicago (17ú heag.)

Spencer, Thomas D., agus Norman Kass. Perspectives in Child Psychology: Research and Review. New York: McGraw-Hill, 1970.

Lua MLA (9ú heag.)

Spencer, Thomas D., agus Norman Kass. Perspectives in Child Psychology: Research and Review. McGraw-Hill, 1970.

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