APA
Ladefoged P., Johnstone K., . (2011). A course in phonetics. Boston, MA: Wadsworth/Cengage Learning.
Chicago
Ladefoged Peter, Johnstone Keith, . 2011. A course in phonetics. Boston, MA: Wadsworth/Cengage Learning.
Harvard
Ladefoged P., Johnstone K., . (2011). A course in phonetics. Boston, MA: Wadsworth/Cengage Learning.
MLA
Ladefoged Peter, Johnstone Keith, . A course in phonetics. Boston, MA: Wadsworth/Cengage Learning. 2011.