Kracht, C. L., Webster, E. K., & Staiano, A. E. (2020). A natural experiment of state-level physical activity and screen-time policy changes early childhood education (ECE) centers and child physical activity. BMC Public Health.
Citação norma ChicagoKracht, Chelsea L., E. Kipling Webster, and Amanda E. Staiano. "A Natural Experiment of State-level Physical Activity and Screen-time Policy Changes Early Childhood Education (ECE) Centers and Child Physical Activity." BMC Public Health 2020.
Citação norma MLAKracht, Chelsea L., E. Kipling Webster, and Amanda E. Staiano. "A Natural Experiment of State-level Physical Activity and Screen-time Policy Changes Early Childhood Education (ECE) Centers and Child Physical Activity." BMC Public Health 2020.