Charles M. Ware; Charles E. Bamford; Garry D. Bruton. Business management for the personal fitness trainer. New York: McGraw-Hill.
Παραπομπή Chicago StyleCharles M. Ware; Charles E. Bamford; Garry D. Bruton. Business Management for the Personal Fitness Trainer. New York: McGraw-Hill.
Παραπομπή MLACharles M. Ware; Charles E. Bamford; Garry D. Bruton. Business Management for the Personal Fitness Trainer. New York: McGraw-Hill.
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