Cita APA (7th ed.)

Newell, F. (2000). Loyalty.com. John Wiley & Sons.

Cita Chicago (17th ed.)

Newell, Frederick. Loyalty.com. Chichester: John Wiley & Sons, 2000.

Cita MLA (9th ed.)

Newell, Frederick. Loyalty.com. John Wiley & Sons, 2000.