Παραπομπή APA

Hamilton, J. C., Cleverdon, R., & Clough, Q. (1970). International tourism. London: Economist Intelligence Unit.

Παραπομπή Chicago Style

Hamilton, John C., Robert Cleverdon, and Quentin Clough. International Tourism. London: Economist Intelligence Unit, 1970.

Παραπομπή MLA

Hamilton, John C., Robert Cleverdon, and Quentin Clough. International Tourism. London: Economist Intelligence Unit, 1970.

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