Yale, P. (2000). The business of tour operations. Harlow [England]: Pearson Education.
Παραπομπή Chicago StyleYale, Pat. The Business of Tour Operations. Harlow [England]: Pearson Education, 2000.
Παραπομπή MLAYale, Pat. The Business of Tour Operations. Harlow [England]: Pearson Education, 2000.
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