APA (7th ed.) Citation

Scheffels Janne, Lund Karl E, & McNeill Ann. (2012). Contrasting snus and NRT as methods to quit smoking. an observational study. BMC.

Chicago Style (17th ed.) Citation

Scheffels Janne, Lund Karl E, and McNeill Ann. Contrasting Snus and NRT as Methods to Quit Smoking. an Observational Study. BMC, 2012.

MLA (9th ed.) Citation

Scheffels Janne, et al. Contrasting Snus and NRT as Methods to Quit Smoking. an Observational Study. BMC, 2012.

Warning: These citations may not always be 100% accurate.