GAGE, N. L. Educational Psychology N. L. Gage And David C. Berliner. Houghton Mifflin.
Lua i Stíl Chicago (17ú heag.)GAGE, N. L. Educational Psychology N. L. Gage And David C. Berliner. Houghton Mifflin.
Lua MLA (8ú heag.)GAGE, N. L. Educational Psychology N. L. Gage And David C. Berliner. Houghton Mifflin.
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