APA (7th ed.) Citation

Graham, A., Papatheodorou, A., & Forsyth, P. Aviation and tourism: Implications for leisure travel.

Chicago Style (17th ed.) Citation

Graham, Anne, Andreas Papatheodorou, and Peter Forsyth. Aviation and Tourism: Implications for Leisure Travel.

MLA (8th ed.) Citation

Graham, Anne, et al. Aviation and Tourism: Implications for Leisure Travel.