APA

Dougherty N. J., National Association for Sport and Physical Education, . (2002). Principles of safety in physical education and sport. Reston, VA: The Association.

Chicago

Dougherty Neil J, National Association for Sport and Physical Education, . 2002. Principles of safety in physical education and sport. Reston, VA: The Association.

Harvard

Dougherty N. J., National Association for Sport and Physical Education, . (2002). Principles of safety in physical education and sport. Reston, VA: The Association.

MLA

Dougherty Neil J, National Association for Sport and Physical Education, . Principles of safety in physical education and sport. Reston, VA: The Association. 2002.