Cita APA (7a ed.)
Roland Conrady, M. B. Trends and Issues in Global Tourism 2011. Springer.
Cita estilo Chicago (17a ed.)
Roland Conrady, Martin Buck. Trends and Issues in Global Tourism 2011. Berlín, Alemania: Springer.
Cita MLA (9a ed.)
Roland Conrady, Martin Buck. Trends and Issues in Global Tourism 2011. Springer.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.