Gaya APA

Baechle, T, R., Earle, R, W. (2004). NSCA'S essentials of personal training (National Strength and Conditioning Association) . Illinois: Human Kinetics.

Gaya MLA

Baechle, Thomas, R.., Earle, Roger, W.. "NSCA'S essentials of personal training (National Strength and Conditioning Association)". Illinois: Human Kinetics, 2004. Text.