Walker, R., & Harding, K. (2006). Tourism: Student's book. United Kingdom: Oxford University Press.
Chicago Stili AlıntıWalker, Robin, ve Keith Harding. Tourism: Student's Book. United Kingdom: Oxford University Press, 2006.
MLA AlıntıWalker, Robin, ve Keith Harding. Tourism: Student's Book. United Kingdom: Oxford University Press, 2006.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..