APA (7th ed.) Citation

Gambetta, V., Gray, G., & Radcliffe, J. (1998). The gambetta method. Gambetta Sports Training Systems.

Chicago Style (17th ed.) Citation

Gambetta, Vern, Gary Gray, and Jimmy Radcliffe. The Gambetta Method. Florida: Gambetta Sports Training Systems, 1998.

MLA (9th ed.) Citation

Gambetta, Vern, et al. The Gambetta Method. Gambetta Sports Training Systems, 1998.