Walker, R. W. (2009). Oxford English for careers tourism 3 Student's book. Oxford University Press.
Παραπομπή Chicago StyleWalker, Robin Walker. Oxford English for Careers Tourism 3 Student's Book. Oxford University Press, 2009.
Παραπομπή MLAWalker, Robin Walker. Oxford English for Careers Tourism 3 Student's Book. Oxford University Press, 2009.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.