International Phonetic Association (编), Handbook of the InternationalPhonetic Association: A Guide to the Use of the InternationalPhoneticAlphabet, Cambridge
ISBN 3-11-017532-0 InternationalPhonetic Association, Handbook of the InternationalPhonetic Association: A guide to the use of the InternationalPhoneticAlphabet, Cambridge:
次闭次前圆唇元音[ʏ] InternationalPhonetic Association, Handbook of the InternationalPhonetic Association: A guide to the use of the InternationalPhoneticAlphabet, Cambridge: