Cita APA (7a ed.)

Baker, A. (1981). Ship or sheep?: An intermediate pronunciation course (2nd ed., new ed.). Cambridge University Press.

Cita Chicago Style (17a ed.)

Baker, Ann. Ship or Sheep?: An Intermediate Pronunciation Course. 2nd ed., new ed. Cambridge ; New York: Cambridge University Press, 1981.

Cita MLA (8a ed.)

Baker, Ann. Ship or Sheep?: An Intermediate Pronunciation Course. 2nd ed., new ed. Cambridge University Press, 1981.