Cita APA (7th ed.)

Ladefoged, P., & Johnson, K. (2015). A Course in Phonetics (séptima edición.). Cengage Learning.

Cita Chicago (17th ed.)

Ladefoged, Peter, i Keith Johnson. A Course in Phonetics. séptima edición. Stamford, USA: Cengage Learning, 2015.

Cita MLA (9th ed.)

Ladefoged, Peter, i Keith Johnson. A Course in Phonetics. séptima edición. Cengage Learning, 2015.