Cita APA

Petry, N. M., Alessi, S. M., & Ledgerwood, D. M. (2011). Contingency management delivered by community therapists in outpatient settings.

Chicago Style Citation

Petry, Nancy M., Sheila M. Alessi, i David M. Ledgerwood. Contingency Management Delivered By Community Therapists in Outpatient Settings. 2011.

Cita MLA

Petry, Nancy M., Sheila M. Alessi, i David M. Ledgerwood. Contingency Management Delivered By Community Therapists in Outpatient Settings. 2011.