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2.		International tourism reports database
3.		Digest of tourist statistics nº 16 / British Tourist Authority Data Publicação: 1992 Col.autor: Reino Unido. British Tourist Authority
4.		Austria / George Hamilton Autor: Hamilton, George
5.		Mexico's devaluations and changes in net foreign exchange receipts from tourism / Mary Fish, Jean D. Gibbons Autor: Fish, Mary Coautor: ; Gibbons, Jean D.
6.		White paper on tourism, 1992 : summary / Prime Minister's Office Data Publicação: 1993 Col.autor: Japão. Prime Minister s Office
7.		Germany / Peter Agel Autor: Agel, Peter
8.		Tendances des marchés touristiques : Europe / Organisation Mondiale du Tourisme Data Publicação: 1994-
9.		La balance des paiements, les invisibles et le compte voyages : études méthodologiques / G. Anderla Autor: Anderla, G. Data Publicação: 1971
10.		Digest of tourist statistics, nº18 / British Tourist Authority Data Publicação: 1995 Col.autor: Reino Unido. British Tourist Authority