Não informado. (1970). Polish Psychological Bulletin. Polish Academy of Sciences, Committee for Psychological Sciences.
Chicago-referens (17:e uppl.)Não informado. Polish Psychological Bulletin. Warsaw: Polish Academy of Sciences, Committee for Psychological Sciences, 1970.
MLA-referens (8:e uppl.)Não informado. Polish Psychological Bulletin. Polish Academy of Sciences, Committee for Psychological Sciences, 1970.
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