Cita APA (7a ed.)

Knowles, G. (1994). Patterns of spoken English: An introduction to English phonetics. Longman.

Cita Chicago Style (17a ed.)

Knowles, Gerald. Patterns of Spoken English: An Introduction to English Phonetics. London [etc.]: Longman, 1994.

Cita MLA (9a ed.)

Knowles, Gerald. Patterns of Spoken English: An Introduction to English Phonetics. Longman, 1994.