Cita APA (7a ed.)

Kenworthy, J. (1987). Teaching english pronunciation. Longman.

Cita Chicago Style (17a ed.)

Kenworthy, Joanne. Teaching English Pronunciation. London [etc.]: Longman, 1987.

Cita MLA (9a ed.)

Kenworthy, Joanne. Teaching English Pronunciation. Longman, 1987.