Cita APA (7a ed.)

Welch, M. W., & Gist, J. W. (1974). The open token economy system: A handbook for a behavioral approach to rehabilitation. Thomas.

Cita Chicago Style (17a ed.)

Welch, Michael W., y Jerre W. Gist. The Open Token Economy System: A Handbook for a Behavioral Approach to Rehabilitation. Springfield, Ill: Thomas, 1974.

Cita MLA (8a ed.)

Welch, Michael W., y Jerre W. Gist. The Open Token Economy System: A Handbook for a Behavioral Approach to Rehabilitation. Thomas, 1974.