APA (7th ed.) Citation

Wilf, A. (1969). Origin and destiny of the moral species. A. S. Barnes.

Chicago Style (17th ed.) Citation

Wilf, Alexander. Origin and Destiny of the Moral Species. South Brunswick [N.J.]: A. S. Barnes, 1969.

MLA (9th ed.) Citation

Wilf, Alexander. Origin and Destiny of the Moral Species. A. S. Barnes, 1969.