APA (7th ed.) Citation

Shields, L., Mamun, A., O'Callaghan, M., Williams, G., & Najman, J. (2010). Breastfeeding and obesity at 21 years: A cohort study. Blackwell Publishing.

Chicago Style (17th ed.) Citation

Shields, Linda, A. Mamun, M. O'Callaghan, G. Williams, and J. Najman. Breastfeeding and Obesity at 21 Years: A Cohort Study. Blackwell Publishing, 2010.

MLA (9th ed.) Citation

Shields, Linda, et al. Breastfeeding and Obesity at 21 Years: A Cohort Study. Blackwell Publishing, 2010.