and A. H. Ismail. 1978. Ability of biochemical and personality variables in discriminating between high and low litness levels. Journal of Psychomotor Research; 22: 193–199.
280. Zatsiorsky V. M.
Science and Practice of Strength / V. M. Zatsiorsky, W. J. Kramer – 2006: Human Kinetics. – 251 p.