Ayllon, T., & Azrin, N. (1968). The token economy: A motivational system for therapy and rehabilitation; Tabellen. Prentice-Hall.
Cita Chicago Style (17a ed.)Ayllon, Teodoro, y Nathan Azrin. The Token Economy: A Motivational System for Therapy and Rehabilitation; Tabellen. Englewood Cliffs, N.J: Prentice-Hall, 1968.
Cita MLA (9a ed.)Ayllon, Teodoro, y Nathan Azrin. The Token Economy: A Motivational System for Therapy and Rehabilitation; Tabellen. Prentice-Hall, 1968.
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