Kerr, C., Smith, L., Charman, S., Harvey, S., Savory, L., Fairclough, S., & Govus, A. (2018). Physical education contributes to total physical activity levels and predominantly in higher intensity physical activity categories. European physical education review, 24(2), S. 152-164. doi:10.1177/1356336X16672127

Kerr, Catherine, Lindsey Smith, Sarah Charman, Stephen Harvey, Louise Savory, Stuart Fairclough, and Andrew Govus. "Physical Education Contributes to Total Physical Activity Levels and Predominantly in Higher Intensity Physical Activity Categories." European Physical Education Review 24, no. 2 (2018): S. 152-164.

Kerr, Catherine, et al. "Physical Education Contributes to Total Physical Activity Levels and Predominantly in Higher Intensity Physical Activity Categories." European Physical Education Review 24.2 (2018): S. 152-164.