World Congress of WAPTT Lisboa, Portugal. (1989). Tourism education for the early 21st century: VIII World Congress of WAPTT, 16th - 19th november, 1988. Instituto de Novas Profissões.
Cita Chicago Style (17a ed.)World Congress of WAPTT Lisboa, Portugal. Tourism Education for the Early 21st Century: VIII World Congress of WAPTT, 16th - 19th November, 1988. Lisboa: Instituto de Novas Profissões, 1989.
Cita MLA (8a ed.)World Congress of WAPTT Lisboa, Portugal. Tourism Education for the Early 21st Century: VIII World Congress of WAPTT, 16th - 19th November, 1988. Instituto de Novas Profissões, 1989.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.