Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (8th εκδ.)

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