APA (7th ed.) Citation

Petrescu, N. (1924). The principles of comparative sociology. Watts.

Chicago Style (17th ed.) Citation

Petrescu, Nicholas. The Principles of Comparative Sociology. London: Watts, 1924.

MLA (9th ed.) Citation

Petrescu, Nicholas. The Principles of Comparative Sociology. Watts, 1924.

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