Mitchell, G. E. (1994). International tour director (Second ed.). Sullivan's Islan: G.E.Mitchell Institute of Travel Career Development.
Chicago-стиль цитированияMitchell, G. E. International Tour Director. Second ed. Sullivan's Islan: G.E.Mitchell Institute of Travel Career Development, 1994.
MLA-цитированиеMitchell, G. E. International Tour Director. Second ed. Sullivan's Islan: G.E.Mitchell Institute of Travel Career Development, 1994.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.