National Strength & Conditioning Association (U.S.). Certification Commission. Exercise technique manual for resistance training (Third edition.).
Citação norma ChicagoNational Strength & Conditioning Association (U.S.). Certification Commission. Exercise Technique Manual for Resistance Training. Third edition.
Citação norma MLANational Strength & Conditioning Association (U.S.). Certification Commission. Exercise Technique Manual for Resistance Training. Third edition.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.