APA Citation

Ladefoged, & Johnstone. (2011). A course in phonetics [ (6th ed.). Boston, MA: Wadsworth/Cengage Learning.

Chicago Style Citation

Ladefoged, and Johnstone. A Course in Phonetics [. 6th ed. Boston, MA: Wadsworth/Cengage Learning, 2011.

MLA Citation

Ladefoged, and Johnstone. A Course in Phonetics [. 6th ed. Boston, MA: Wadsworth/Cengage Learning, 2011.

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