APA aipamena

Leatherdale, S. T., Ahmed, R., & Kaiserman, M. (2006). Marijuana use by tobacco smokers and nonsmokers: Who is smoking what? Canadian Medical Association.

Chicago Style aipamena

Leatherdale, Scott T., Rashid Ahmed, and Murray Kaiserman. Marijuana Use By Tobacco Smokers and Nonsmokers: Who Is Smoking What? Canadian Medical Association, 2006.

MLA aipamena

Leatherdale, Scott T., Rashid Ahmed, and Murray Kaiserman. Marijuana Use By Tobacco Smokers and Nonsmokers: Who Is Smoking What? Canadian Medical Association, 2006.