APA-viite (7. p.)
Stott, T. At your service: english for the travel and tourist industry (units 1 to 15): Cassette. Oxford University Press.
Chicago-viite (17. p.)
Stott, Trish. At Your Service: English for the Travel and Tourist Industry (units 1 to 15): Cassette. Oxford University Press.
MLA-viite (9. p.)
Stott, Trish. At Your Service: English for the Travel and Tourist Industry (units 1 to 15): Cassette. Oxford University Press.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.