Citazione Stile APA (7a Edizione)

Kroll, W. P. (1982). Graduate study and research in physical education. Human Kinetics.

Citazione stile Chigago Style (17a edizione)

Kroll, Walter P. Graduate Study and Research in Physical Education. Champaign, Illinois: Human Kinetics, 1982.

Citatione MLA (9a ed.)

Kroll, Walter P. Graduate Study and Research in Physical Education. Human Kinetics, 1982.