閉前不圓唇元音International Phonetic Association (编), Handbook of the International Phonetic Association: A Guide to the Use of the International Phonetic Alphabet, Cambridge
清小舌顫音氣流機制是肺部氣流,即由肺與橫膈膜驱动空气。 The International Phonetic Alphabet and the IPA Chart. International Phonetic Association. [2019-07-24]. (原始内容存档于2019-10-14)
濁雙唇塞音 Croatian, Handbook of the International Phonetic Association: A guide to the use of the International Phonetic Alphabet, Cambridge: Cambridge University
濁齒齦擦音International Phonetic Association (编), Handbook of the International Phonetic Association: A Guide to the Use of the International Phonetic Alphabet
浊齿塞音Swedish, Handbook of the International Phonetic Association: A Guide to the usage of the International Phonetic Alphabet., Cambridge: Cambridge University