1[4]Tourism Satellite Account:Recommended Methodological Framework:Chapter3 REVIEW OF THE BASIC TOURISM CONCEPTS DEFINITIONS AND CLASSIFICATIONS.
2[5]Tourism Satellite Account:Recommended Methodological Framework:ANNEX14.Enzo Paci World Conference on the measurement of the economic impact of tourism,Nice,France,June 1999:"OECD Employment module" by Mr.Nicolas Heerschap.