APA (7th ed.) Citation

Ellwood, C. A. (1910). Sociology and modern social problems. American book company.

Chicago Style (17th ed.) Citation

Ellwood, Charles A. Sociology and Modern Social Problems. New York, Cincinnati: American book company, 1910.

MLA (9th ed.) Citation

Ellwood, Charles A. Sociology and Modern Social Problems. American book company, 1910.