(1972). International tourism and tourism policy in OECD member countries. Paris: Organisation for Economic Co-operation and Development.
Παραπομπή Chicago StyleInternational Tourism and Tourism Policy in OECD Member Countries. Paris: Organisation for Economic Co-operation and Development, 1972.
Παραπομπή MLAInternational Tourism and Tourism Policy in OECD Member Countries. Paris: Organisation for Economic Co-operation and Development, 1972.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.