An introduction to phonetics and phonology.

MLA

Clark, John, Colin Yallop, and Janet Fletcher. An Introduction to Phonetics and Phonology. 3rd ed. / Malden, Mass.: Blackwell Publishing, 2007.

APA

Clark, J., Yallop, C., & Fletcher, J. (2007). An introduction to phonetics and phonology. 3rd ed. / Malden, Mass.: Blackwell Publishing.

Chicago

Clark, John, Colin Yallop, and Janet Fletcher. An Introduction to Phonetics and Phonology. 3rd ed. / Malden, Mass.: Blackwell Publishing, 2007.