APA (7th ed.) Citation

Ladefoged, P., & Johnson, K. (2015). A course in phonetics (Seventh Edition.). Cengage Learning.

Chicago Style (17th ed.) Citation

Ladefoged, Peter, and Keith Johnson. A Course in Phonetics. Seventh Edition. Australia: Cengage Learning, 2015.

MLA (9th ed.) Citation

Ladefoged, Peter, and Keith Johnson. A Course in Phonetics. Seventh Edition. Cengage Learning, 2015.