APA (7th ed.) Citation

Baldursdottir, B., Valdimarsdottir, H. B., Krettek, A., Gylfason, H. F., & Sigfusdottir, I. D. (2017). Age-related differences in physical activity and depressive symptoms among 10−19-year-old adolescents: A population based study. Psychology of sport and exercise, 28, 91-99. https://doi.org/10.1016/j.psychsport.2016.10.007

Chicago Style (17th ed.) Citation

Baldursdottir, Birna, Heiddis B. Valdimarsdottir, Alexandra Krettek, Haukur Freyr Gylfason, and Inga Dora Sigfusdottir. "Age-related Differences in Physical Activity and Depressive Symptoms Among 10−19-year-old Adolescents: A Population Based Study." Psychology of Sport and Exercise 28 (2017): 91-99. https://doi.org/10.1016/j.psychsport.2016.10.007.

MLA (9th ed.) Citation

Baldursdottir, Birna, et al. "Age-related Differences in Physical Activity and Depressive Symptoms Among 10−19-year-old Adolescents: A Population Based Study." Psychology of Sport and Exercise, vol. 28, 2017, pp. 91-99, https://doi.org/10.1016/j.psychsport.2016.10.007.