APA (7e ed.) Bronvermelding

Walker R. Robin & Harding K. Keith. (2010). Tourism 1: Student`s Book. New York, Oxford University Press, 2010.

Chicago (17e ed.) Bronvermelding

Walker R. Robin en Harding K. Keith. Tourism 1: Student`s Book. New York, Oxford University Press, 2010, 2010.

MLA (9e ed.) Bronvermelding

Walker R. Robin en Harding K. Keith. Tourism 1: Student`s Book. New York, Oxford University Press, 2010, 2010.