Dyfyniad APA

Williams, S., & Petersen, R. (2000). Serious tennis. Human Kinetics.

Dyfyniad Arddull Chicago

Williams, Scott, and Randy Petersen. Serious Tennis. Champaign, Ill: Human Kinetics, 2000.

Dyfyniad MLA

Williams, Scott, and Randy Petersen. Serious Tennis. Human Kinetics, 2000.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.