Παραπομπή σε μορφή APA (7η εκδ.)

Welk, G. (2002). Physical activity assessments for health-related research. Human Kinetics.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Welk, Greg. Physical Activity Assessments for Health-related Research. Champaign: Human Kinetics, 2002.

Παραπομπή σε μορφή MLA (8th εκδ.)

Welk, Greg. Physical Activity Assessments for Health-related Research. Human Kinetics, 2002.