O'Hagan, J. W., & Minnock, C. (1983). The economic significance of tourism within the European community: A fifth report by the working group of the National Tourist Organization of the EEC. For the Working Group by the British Tourist Authority.
Lua i Stíl Chicago (17ú heag.)O'Hagan, John William, agus C.M Minnock. The Economic Significance of Tourism Within the European Community: A Fifth Report by the Working Group of the National Tourist Organization of the EEC. [S.l.]: For the Working Group by the British Tourist Authority, 1983.
Lua MLA (9ú heag.)O'Hagan, John William, agus C.M Minnock. The Economic Significance of Tourism Within the European Community: A Fifth Report by the Working Group of the National Tourist Organization of the EEC. For the Working Group by the British Tourist Authority, 1983.