Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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