Mitchell, G. E. (1994). International tour director (Second ed.). Sullivan's Islan: G.E.Mitchell Institute of Travel Career Development.
Chicago ZitierstilMitchell, G. E. International Tour Director. Second ed. Sullivan's Islan: G.E.Mitchell Institute of Travel Career Development, 1994.
MLA ZitierstilMitchell, G. E. International Tour Director. Second ed. Sullivan's Islan: G.E.Mitchell Institute of Travel Career Development, 1994.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.