Everaert, M.; van Riemsdijk, H.; Goedemans, R. (eds) 2006. The Blackwell companion to syntax, Volumes I–V, Blackwell, London. Halliday, M.A.K & Matthiessen, Christian M. I. M (2004). Subject, actor, theme in An introduction to functional grammar. Hodder Arnold, London, England. Huddleston, R.; Pullum, K. (2005). A student's introduction to English grammar. Cambridge University Press. See also Subject (grammar) Object (grammar) Subjective (grammar) Grammatical case English pronouns Subject verb agreement Syntactic entities