Walker, R., & Harding, K. (2009). Tourism: Student's book. New York: Oxford university Press.
Trích dẫn kiểu ChicagoWalker, Robin., và Keith Harding. Tourism: Student's Book. New York: Oxford university Press, 2009.
Deismireacht MLAWalker, Robin., và Keith Harding. Tourism: Student's Book. New York: Oxford university Press, 2009.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.