Cita APA (7th ed.)

Perkins, E. (2000). Online travel: Your guide to the best travel resources, services, and deals on-line and off. Microsoft Press.

Cita Chicago (17th ed.)

Perkins, Ed. Online Travel: Your Guide to the Best Travel Resources, Services, and Deals On-line and off. Redmond, Wash: Microsoft Press, 2000.

Cita MLA (9th ed.)

Perkins, Ed. Online Travel: Your Guide to the Best Travel Resources, Services, and Deals On-line and off. Microsoft Press, 2000.