APA (7th ed.) Citation

Ellwood, C. A. (1916). The social problem: A constructive analysis (2d ed.). The Macmillan company.

Chicago Style (17th ed.) Citation

Ellwood, Charles A. The Social Problem: A Constructive Analysis. 2d ed. New York: The Macmillan company, 1916.

MLA (9th ed.) Citation

Ellwood, Charles A. The Social Problem: A Constructive Analysis. 2d ed. The Macmillan company, 1916.