APA (7th ed.) Citation

Grabbe, P. (1939). We call it human nature. Harper.

Chicago Style (17th ed.) Citation

Grabbe, Paul. We Call It Human Nature. Nueva York: Harper, 1939.

MLA (9th ed.) Citation

Grabbe, Paul. We Call It Human Nature. Harper, 1939.

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