Kozak, M., & Kozak, N. (2015). Tourism economics: A practical perspective. Cambridge Scholars Publishing.
Chicago Style (17th ed.) ZitazioaKozak, Metin, eta Nazmi Kozak. Tourism Economics: A Practical Perspective. Newcastle upon Tyne, England: Cambridge Scholars Publishing, 2015.
MLA (9th ed.) ZitazioaKozak, Metin, eta Nazmi Kozak. Tourism Economics: A Practical Perspective. Cambridge Scholars Publishing, 2015.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.