1. Machine design; theory and practise;Deutschman,1975
2. Costruzione di macchine, Vol 2;Giovannozzi,1980
3. Henriot G., Ingranaggi—trattato teorico e pratico, vol. I e II, Tecniche Nuove, 1978, (in italian), or Traité théorique et pratique des engrenages, Schweich, Dunod, 1949.
4. Source book on gear design, technology, and performance: a comprehensive collection of outstanding articles from the periodical and reference literature;Howes,1980
5. Dudley's gear handbook—the design, manufacture, and application of gears,1992