APA (7th ed.) Citation

Westermarck, E. (1912). The Origin and development of the moral ideas (2nd ed.). Macmillan and Co.

Chicago Style (17th ed.) Citation

Westermarck, Edward. The Origin and Development of the Moral Ideas. 2nd ed. London: Macmillan and Co, 1912.

MLA (9th ed.) Citation

Westermarck, Edward. The Origin and Development of the Moral Ideas. 2nd ed. Macmillan and Co, 1912.