基庫尤語Kevin C. Ford, 1975. "The tones of nouns in Kikuyu," Studies in African Linguistics 6, 49–64; G.N. Clements & Kevin C. Ford, 1979, "Kikuyu Tone Shift
閩南話拼音方案Professor of Linguistics, University of Amoy, "The Phonetic Structure and Tone Behaviour in Hagu (commonly known as the Amoy Dialect) and Their Relation