Groeben, N., & Westmeyer, H. (1975). Kriterien psychologischer Forschung. Juventa Verl.
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Tohutoru Kātū Chicago (17th ed.)
Groeben, Norbert, me Hans Westmeyer. Kriterien Psychologischer Forschung. München: Juventa Verl, 1975.
I tāruatia paitia ki te papatopenga
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Tohutoro MLA (9th ed.)
Groeben, Norbert, me Hans Westmeyer. Kriterien Psychologischer Forschung. Juventa Verl, 1975.
I tāruatia paitia ki te papatopenga
Kua rahua te tārua ki te papatopenga
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