APA aipamena

Stepanov, I., Carmella, S. G., Han, S., Pinto, A., Strasser, A. A., Lerman, C., & Hecht, S. S. (2009). Evidence for endogenous formation of N′-nitrosonornicotine in some long-term nicotine patch users. Oxford University Press.

Chicago Style aipamena

Stepanov, Irina, Steven G. Carmella, Shaomei Han, Angela Pinto, Andrew A. Strasser, Caryn Lerman, and Stephen S. Hecht. Evidence for Endogenous Formation of N′-nitrosonornicotine in Some Long-term Nicotine Patch Users. Oxford University Press, 2009.

MLA aipamena

Stepanov, Irina, et al. Evidence for Endogenous Formation of N′-nitrosonornicotine in Some Long-term Nicotine Patch Users. Oxford University Press, 2009.