Dyfyniad APA

Petry, N. M. (2011). Contingency management: What it is and why psychiatrists should want to use it. Royal College of Psychiatrists.

Dyfyniad Arddull Chicago

Petry, Nancy M. Contingency Management: What It Is and Why Psychiatrists Should Want To use It. Royal College of Psychiatrists, 2011.

Dyfyniad MLA

Petry, Nancy M. Contingency Management: What It Is and Why Psychiatrists Should Want To use It. Royal College of Psychiatrists, 2011.

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