Cita APA (7th ed.)

Beytes, C., & Nau, J. (2011). Ball redbook (18th ed.). Ball Publishing.

Cita Chicago (17th ed.)

Beytes, Chris, i Jim Nau. Ball Redbook. 18th ed. Chicago, USA: Ball Publishing, 2011.

Cita MLA (9th ed.)

Beytes, Chris, i Jim Nau. Ball Redbook. 18th ed. Ball Publishing, 2011.