Dyfyniad APA

Allsen, P. E., & Witbeck, P. (1992). Racquetball (Fifth edition.). Wm. C. Brown Publishers.

Dyfyniad Arddull Chicago

Allsen, Philip E., and Pete Witbeck. Racquetball. Fifth edition. Dubuque, Iowa: Wm. C. Brown Publishers, 1992.

Dyfyniad MLA

Allsen, Philip E., and Pete Witbeck. Racquetball. Fifth edition. Wm. C. Brown Publishers, 1992.

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