6Baldwin, Timothy, Takenobu Tokunaga and Hozumi Tanaka. 1999. The parameter-based analysis of Japanese relative clause constructions. In IPSJSIJ Notes 99,95:5-62.
7Comrie, Bernard. 1981. Language Universals and Linguistic Typology.
8沈家煊译.《语言共性和语言类型》[M].北京:华夏出版社,1989..
9Comrie, Bernard and Norval Smith. 1977. Lingua Descriptive Studies: Questionnaire. Amsterdam: North-Holland.
10Dryer, Matthew S. 1992. The Greenbergian word order correlations. Language 68,1:43-80.