Cita APA (7th ed.)

Gray, W. S., & Liguori, S. C. (1994). Hotel and motel management and operations (3rd ed.). Regents/Prentice Hall.

Cita Chicago (17th ed.)

Gray, William S., i Salvatore C. Liguori. Hotel and Motel Management and Operations. 3rd ed. Englewood Cliffs, N.J: Regents/Prentice Hall, 1994.

Cita MLA (9th ed.)

Gray, William S., i Salvatore C. Liguori. Hotel and Motel Management and Operations. 3rd ed. Regents/Prentice Hall, 1994.