APA (7th ed.) Citation

(1911). Historisch-materialistische ethiek. Zernike.

Chicago Style (17th ed.) Citation

Historisch-materialistische Ethiek. Zernike, 1911.

MLA (8th ed.) Citation

Historisch-materialistische Ethiek. Zernike, 1911.

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