APA

Ayllon T., Azrin N. H., . (1968). The token economy: a motivational system for therapy and rehabilitation. New York: Appleton-Century-Crofts.

Chicago

Ayllon Teodoro, Azrin Nathan H, . 1968. The token economy: a motivational system for therapy and rehabilitation. New York: Appleton-Century-Crofts.

Harvard

Ayllon T., Azrin N. H., . (1968). The token economy: a motivational system for therapy and rehabilitation. New York: Appleton-Century-Crofts.

MLA

Ayllon Teodoro, Azrin Nathan H, . The token economy: a motivational system for therapy and rehabilitation. New York: Appleton-Century-Crofts. 1968.