Cita APA (7a ed.)

Baker, A., & Marshall, L. (1980). Ship or Sheep?: Introducing English pronunciation. Cambridge University.

Cita Chicago Style (17a ed.)

Baker, Ann, y Leslie Marshall. Ship or Sheep?: Introducing English Pronunciation. Cambridge: Cambridge University, 1980.

Cita MLA (9a ed.)

Baker, Ann, y Leslie Marshall. Ship or Sheep?: Introducing English Pronunciation. Cambridge University, 1980.