Heyward, V. H. (1991). Advanced fitness assessment and exercise prescription (2nd ed.). Champaign, IL: Human Kinetics.
استشهاد بنمط شيكاغوHeyward, Vivian H. Advanced Fitness Assessment and Exercise Prescription. 2nd ed. Champaign, IL: Human Kinetics, 1991.
MLA استشهادHeyward, Vivian H. Advanced Fitness Assessment and Exercise Prescription. 2nd ed. Champaign, IL: Human Kinetics, 1991.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.