Παραπομπή APA

World Tourism Organization. (1998). The Euro and tourism: CEU/ETC seminar Royal Olympic Cruises Ship, Greece, 5-8 May 1998. Madrid, Spain: World Tourism Organization.

Παραπομπή Chicago Style

World Tourism Organization. The Euro and Tourism: CEU/ETC Seminar Royal Olympic Cruises Ship, Greece, 5-8 May 1998. Madrid, Spain: World Tourism Organization, 1998.

Παραπομπή MLA

World Tourism Organization. The Euro and Tourism: CEU/ETC Seminar Royal Olympic Cruises Ship, Greece, 5-8 May 1998. Madrid, Spain: World Tourism Organization, 1998.

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