APA (7e ed.) Bronvermelding

Allsen, P. E., & Witbeck, P. (1992). Racquetball (5th ed.). Brown.

Chicago (17e ed.) Bronvermelding

Allsen, Philip E., en Pete Witbeck. Racquetball. 5th ed. Dubuque, Iowa: Brown, 1992.

MLA (9e ed.) Bronvermelding

Allsen, Philip E., en Pete Witbeck. Racquetball. 5th ed. Brown, 1992.