Goldstein, K., & Scheerer, M. (1950). Abstract and concrete behavior: An experimental study with special tests. The American Psychological Association, Inc., Northwestern University.
Chicago (17e ed.) BronvermeldingGoldstein, Kurt, en Martin Scheerer. Abstract and Concrete Behavior: An Experimental Study with Special Tests. Evanston, Illinois: The American Psychological Association, Inc., Northwestern University, 1950.
MLA (9e ed.) BronvermeldingGoldstein, Kurt, en Martin Scheerer. Abstract and Concrete Behavior: An Experimental Study with Special Tests. The American Psychological Association, Inc., Northwestern University, 1950.
Let op: Deze citaties zijn niet altijd 100% accuraat.