Bell Keith F (1983) “The Athlete Guide to Winning Performance in All Sports”. (London Prentice Hall).
Casolino E Cortis C,(2012) “Department of Human Movement and Sport Sciences, University of Rome Foro Italico," Rome, Italy.
Clarke Harrison H., and Clarke David H.(1972) “Advanced Statics with Application to physical Education” Engle wood Cliffs, N.J.Printice all Ins.
E. Prasad (1994) “Modern Coaching in Kabaddi”. (New Delhi: DVS Publication).
Harre Dietrich (1982) “Principles of Sports Training” ( Berlin: Interdruck, Graphister GroBbertrick
Johnson and Fisher,(1979) “Scientific Basis of Athletics Conditioning, Lea & Febiger,” Philadelphia.