Hawkins, D. E., Ritchie, J. B., Go, F., & Frechtling, D. C. (1991). World travel and tourism review: Indicators, trends and forecasts. CAB International.
Style de citation Chicago (17e éd.)Hawkins, Donald E., J.R. Brent Ritchie, Frank Go, et Douglas C. Frechtling. World Travel and Tourism Review: Indicators, Trends and Forecasts. Oxford: CAB International, 1991.
Style de citation MLA (8e éd.)Hawkins, Donald E., et al. World Travel and Tourism Review: Indicators, Trends and Forecasts. CAB International, 1991.
Attention : ces citations peuvent ne pas être correctes à 100%.