Cita APA

Trecker, H. B. 1. (1948). Social group work: Principles and practices (Revised and Enlarged.). New York, New York: Whiteside.

Citación estilo Chicago

Trecker, Harleigh Bradley 1911-. Social Group Work: Principles and Practices. Revised and Enlarged. New York, New York: Whiteside, 1948.

Cita MLA

Trecker, Harleigh Bradley 1911-. Social Group Work: Principles and Practices. Revised and Enlarged. New York, New York: Whiteside, 1948.