APA (7th ed.) Citation

Herbart, J. F. (1839). Psychologische Untersuchungen. [s.n.].

Chicago Style (17th ed.) Citation

Herbart, Johann Friedrich. Psychologische Untersuchungen. Göttingen: [s.n.], 1839.

MLA (9th ed.) Citation

Herbart, Johann Friedrich. Psychologische Untersuchungen. [s.n.], 1839.

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