Παραπομπή APA
Frangialli, F. (1999). Consideretions sur le tourisme international =: Observations on international tourism = Consideraciones sobre el turismo internacional. Madrid, Spain: World Tourism Organization.
Παραπομπή Chicago StyleFrangialli, Francesco. Consideretions Sur Le Tourisme International =: Observations On International Tourism = Consideraciones Sobre El Turismo Internacional. Madrid, Spain: World Tourism Organization, 1999.
Παραπομπή MLAFrangialli, Francesco. Consideretions Sur Le Tourisme International =: Observations On International Tourism = Consideraciones Sobre El Turismo Internacional. Madrid, Spain: World Tourism Organization, 1999.
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