APA (7th ed.) Citation

Lewis, S. J., Araya, R., Smith, G. D., Freathy, R., Gunnell, D., Palmer, T., & Munafò, M. Smoking is associated with, but does not cause, depressed mood in pregnancy--a mendelian randomization study. Public Library of Science (PLoS).

Chicago Style (17th ed.) Citation

Lewis, Sarah J., Ricardo Araya, George Davey Smith, Rachel Freathy, David Gunnell, Tom Palmer, and Marcus Munafò. Smoking Is Associated with, but Does Not Cause, Depressed Mood in Pregnancy--a Mendelian Randomization Study. Public Library of Science (PLoS).

MLA (9th ed.) Citation

Lewis, Sarah J., et al. Smoking Is Associated with, but Does Not Cause, Depressed Mood in Pregnancy--a Mendelian Randomization Study. Public Library of Science (PLoS).