Não informado. (1964). Educational and Psychological Interactions. University of Lund, Malmo School of Education.
Citace podle Chicago (17th ed.)Não informado. Educational and Psychological Interactions. Malmo, Suecia: University of Lund, Malmo School of Education, 1964.
Citace podle MLA (8th ed.)Não informado. Educational and Psychological Interactions. University of Lund, Malmo School of Education, 1964.
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