VERNER, B. (1985). Racquetball: Basic skills and drills. Mayfield Publishing Comp.
Citazione stile Chigago Style (17a edizione)VERNER, Bill. Racquetball: Basic Skills and Drills. California: Mayfield Publishing Comp, 1985.
Citatione MLA (9a ed.)VERNER, Bill. Racquetball: Basic Skills and Drills. Mayfield Publishing Comp, 1985.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.