APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Petrescu, Nicolae. The Principles of Comparative Sociology. London: Watts & Co., 1924.

MLA (8th ed.) Citation

Petrescu, Nicolae. The Principles of Comparative Sociology. Watts & Co., 1924.

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