Baker, A. (1981). Ship or sheep?: An intermediate pronunciation course (2nd ed., new ed.). Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Baker, Ann. Ship or Sheep?: An Intermediate Pronunciation Course. 2nd ed., new ed. Cambridge ; New York: Cambridge University Press, 1981.
Lua MLA (8ú heag.)Baker, Ann. Ship or Sheep?: An Intermediate Pronunciation Course. 2nd ed., new ed. Cambridge University Press, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.