Ladefoged, P., & Johnstone, K. (2011). A course in phonetics (6th ed.). Wadsworth/Cengage Learning.
Chicago Style (17th ed.) CitationLadefoged, Peter, and Keith Johnstone. A Course in Phonetics. 6th ed. Boston, Mass: Wadsworth/Cengage Learning, 2011.
MLA (9th ed.) CitationLadefoged, Peter, and Keith Johnstone. A Course in Phonetics. 6th ed. Wadsworth/Cengage Learning, 2011.
Warning: These citations may not always be 100% accurate.