Sportiche, D; Koopmam, H; Stabler, E, 2014. An Introduction to Syntactic Analysis and Theory. Oxford, United Kingdom: Wiley Blackwell. Dostupné online. S. 1–151.
AARTS, B., 1997. Modern Linguistics English Syntax And Argumentation. Hampshire, United Kingdom: Macmillan Press. Dostupné online. S. 111–121.