Dyfyniad APA

Hughes, J. R. (2009). How confident should we be that smoking cessation treatments work?

Dyfyniad Arddull Chicago

Hughes, John R. How Confident Should We Be That Smoking Cessation Treatments Work? 2009.

Dyfyniad MLA

Hughes, John R. How Confident Should We Be That Smoking Cessation Treatments Work? 2009.

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