Não informado. (1964). Educational and Psychological Interactions. University of Lund, Malmo School of Education.
Chicago-Zitierstil (17. Ausg.)Não informado. Educational and Psychological Interactions. Malmo, Suecia: University of Lund, Malmo School of Education, 1964.
MLA-Zitierstil (8. Ausg.)Não informado. Educational and Psychological Interactions. University of Lund, Malmo School of Education, 1964.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.