Lua APA (7ú heag.)

Não informado. (1910). Journal of Educational Psychology. American Psychological Association.

Lua i Stíl Chicago (17ú heag.)

Não informado. Journal of Educational Psychology. Arlington, Va: American Psychological Association, 1910.

Lua MLA (8ú heag.)

Não informado. Journal of Educational Psychology. American Psychological Association, 1910.

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