Cita APA (7th ed.)

Walker, S. (2009). Travel resources: An annotated guide. Scarecrow Press.

Cita Chicago (17th ed.)

Walker, Stephen. Travel Resources: An Annotated Guide. Lanham, Md.: Scarecrow Press, 2009.

Cita MLA (9th ed.)

Walker, Stephen. Travel Resources: An Annotated Guide. Scarecrow Press, 2009.