Cita APA (7a ed.)

Powell, T. J., & Powell, T. J. (1987). Self-help organizations and professional practice. National Assoc. of Social Workers.

Cita Chicago Style (17a ed.)

Powell, Timothy J., y Thomas J. Powell. Self-help Organizations and Professional Practice. Silver Spring, Md: National Assoc. of Social Workers, 1987.

Cita MLA (9a ed.)

Powell, Timothy J., y Thomas J. Powell. Self-help Organizations and Professional Practice. National Assoc. of Social Workers, 1987.