APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

Warning: These citations may not always be 100% accurate.