Walker, R. W. (2009). Oxford English for careers tourism 3. Oxford University Press.
Trích dẫn kiểu ChicagoWalker, Robin Walker. Oxford English for Careers Tourism 3. Oxford University Press, 2009.
Deismireacht MLAWalker, Robin Walker. Oxford English for Careers Tourism 3. Oxford University Press, 2009.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.