Cita APA (7th ed.)

Walker, J. R. (2013). Introduction to hospitality (Seventh edition.). Pearson.

Cita Chicago (17th ed.)

Walker, John R. Introduction to Hospitality. Seventh edition. Boston: Pearson, 2013.

Cita MLA (9th ed.)

Walker, John R. Introduction to Hospitality. Seventh edition. Pearson, 2013.