Baker, A. (2006). Ship or sheep?: An intermediate pronunciation course (3rd ed.). Cambridge University Press.
Chicago-viite (17. p.)Baker, Ann. Ship or Sheep?: An Intermediate Pronunciation Course. 3rd ed. Cambridge ; New York ; New Delhi: Cambridge University Press, 2006.
MLA-viite (8. p.)Baker, Ann. Ship or Sheep?: An Intermediate Pronunciation Course. 3rd ed. Cambridge University Press, 2006.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.