APA (7th ed.) Citation

Knowles, G. (1987). Patterns of spoken english : an introduc-: Tion to english phonetics. Longman.

Chicago Style (17th ed.) Citation

Knowles, Gerald. Patterns of Spoken English : An Introduc-: Tion to English Phonetics. London: Longman, 1987.

MLA (9th ed.) Citation

Knowles, Gerald. Patterns of Spoken English : An Introduc-: Tion to English Phonetics. Longman, 1987.