McIntosh, R. W., Goeldner, C. R., & Ritchie, J. R. B. (1995). Tourism: Principles, practices, philosophies (7th ed.). Wiley.
Lua i Stíl Chicago (17ú heag.)McIntosh, Robert Woodrow, Charles R. Goeldner, agus J. R. Brent Ritchie. Tourism: Principles, Practices, Philosophies. 7th ed. New York: Wiley, 1995.
Lua MLA (8ú heag.)McIntosh, Robert Woodrow, et al. Tourism: Principles, Practices, Philosophies. 7th ed. Wiley, 1995.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.