APA (7th ed.) Citation

Heikkilä, K., Kelly, Y., Renfrew, M., Sacker, A., & Quigley, M. (2014). Breastfeeding and educational achievement at age 5.

Chicago Style (17th ed.) Citation

Heikkilä, K., Y. Kelly, M. Renfrew, A. Sacker, and M. Quigley. Breastfeeding and Educational Achievement at Age 5. 2014.

MLA (9th ed.) Citation

Heikkilä, K., et al. Breastfeeding and Educational Achievement at Age 5. 2014.