APA (7th ed.) Citation

Kayser, R. (1946). Spinoza: Portrait of a spiritual hero. Philosophical Library.

Chicago Style (17th ed.) Citation

Kayser, Rudolf. Spinoza: Portrait of a Spiritual Hero. New York: Philosophical Library, 1946.

MLA (9th ed.) Citation

Kayser, Rudolf. Spinoza: Portrait of a Spiritual Hero. Philosophical Library, 1946.

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