Gaya APA

Ladefoged, P., Disner, S, F. (2012). Vowels and consonants (third ed.). Wiley-Blackwell: John Wiley & Sons.

Gaya MLA

Ladefoged, Peter., Disner, Sandra, Ferari. "Vowels and consonants". third ed. Wiley-Blackwell: John Wiley & Sons, 2012. Text.