Economist Intelligence Unit (Great Britain) & Association of British Travel Agents. (1968). Economic survey of the travel agency business. Association of British Travel Agents.
Chicago-Zitierstil (17. Ausg.)Economist Intelligence Unit (Great Britain) und Association of British Travel Agents. Economic Survey of the Travel Agency Business. London: Association of British Travel Agents, 1968.
MLA-Zitierstil (8. Ausg.)Economist Intelligence Unit (Great Britain) und Association of British Travel Agents. Economic Survey of the Travel Agency Business. Association of British Travel Agents, 1968.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.