951-45-0189-6 PeterLadefoged|Ladefoged, Peter, A Course in Phonetics, fifth edition, 2006. Boston, MA: Thomson Wadsworth ISBN 1-4130-2079-8 Ladefoged, Peter, Elements
951-45-0189-6 PeterLadefoged|Ladefoged, Peter, A Course in Phonetics, fifth edition, 2006. Boston, MA: Thomson Wadsworth ISBN 1-4130-2079-8 Ladefoged, Peter, Elements