Howley, E. T., & Franks, B. D. (1997). Health fitness instructor's handbook (3rd ed.). Human Kinetics.
Chicago Style aipamenaHowley, Edward T., and B. Don Franks. Health Fitness Instructor's Handbook. 3rd ed. Champaign, IL: Human Kinetics, 1997.
MLA aipamenaHowley, Edward T., and B. Don Franks. Health Fitness Instructor's Handbook. 3rd ed. Human Kinetics, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.