World Tourism Organization. (2003). Tourism, peace and sustainable development for Africa: Luanda, Angola, 29-30 May 2003 =Le tourism, la paix et le development durable pour l'Afrique : Luanda, Angola 29-30 mai 2003. [Madrid, Spain]: World Tourism Organization.
Παραπομπή Chicago StyleWorld Tourism Organization. Tourism, Peace and Sustainable Development for Africa: Luanda, Angola, 29-30 May 2003 =Le Tourism, La Paix Et Le Development Durable Pour L'Afrique : Luanda, Angola 29-30 Mai 2003. [Madrid, Spain]: World Tourism Organization, 2003.
Παραπομπή MLAWorld Tourism Organization. Tourism, Peace and Sustainable Development for Africa: Luanda, Angola, 29-30 May 2003 =Le Tourism, La Paix Et Le Development Durable Pour L'Afrique : Luanda, Angola 29-30 Mai 2003. [Madrid, Spain]: World Tourism Organization, 2003.