APA (7th ed.) Citation

Fietkau, H. (1973). Zur Methodologie des Experimentierens in der Psychologie. Psychologia universalis.

Chicago Style (17th ed.) Citation

Fietkau, Hans-Joachim. "Zur Methodologie Des Experimentierens in Der Psychologie." Psychologia Universalis 1973.

MLA (8th ed.) Citation

Fietkau, Hans-Joachim. "Zur Methodologie Des Experimentierens in Der Psychologie." Psychologia Universalis, 1973.

Warning: These citations may not always be 100% accurate.