Clark, J. E., & Yallop, C. (1991). An introduction to phonetics and phonology. Basil Blackwell.
Chicago Style (17th ed.) CitationClark, John Ellery, and Colin Yallop. An Introduction to Phonetics and Phonology. Oxford [etc.]: Basil Blackwell, 1991.
MLA (9th ed.) CitationClark, John Ellery, and Colin Yallop. An Introduction to Phonetics and Phonology. Basil Blackwell, 1991.
Warning: These citations may not always be 100% accurate.