APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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