1 吴云芳,HPSG理论简介
2 Muller,S.(2010) Grammatiktheorie(英译本)
3 Sag, Ivan A. 1997. English Relative Clause Constructions
4 Ginzburg, Jonathan and Sag, Ivan A. 2000. Interrogative Investigations: The form,meaning, and use of English interrogatives
5 Ivan A. sag 2012 Sign-Based Construction Grammar：An Informal Synopsis.