Dyfyniad APA

Cummings, N. A., & Cummings, J. L. (2000). The first session with substance abusers: A step-by-step guide. San Francisco: Jossey-Bass.

Dyfyniad Arddull Chicago

Cummings, Nicholas A., và Janet L. Cummings. The First Session With Substance Abusers: A Step-by-step Guide. San Francisco: Jossey-Bass, 2000.

Dyfyniad MLA

Cummings, Nicholas A., và Janet L. Cummings. The First Session With Substance Abusers: A Step-by-step Guide. San Francisco: Jossey-Bass, 2000.

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