grammar: An outline. Cambridge, UK: Cambridge University Press. Huddleston, Rodney and Geoffrey K Pullum, 2002, The Cambridge Grammar of the English Language, Cambridge, Cambridge University Press. Lester, M. 1971. Introductory transformational grammar of English. New York: Holt, Rinehart and Winston, Inc. Matthews, P. 1981. Syntax. Cambridge, UK: Cambridge University Press. Miller, J. 2011. A critical introduction to syntax. London: continuum. Pollard, C. and I. Sag. 1994. Head-Driven Phrase Structure Grammar. Chicago: The University Press of Chicago. Quirk, Randolph, Sidney Greenbaum, Geoffrey Leech and Jan Svartvik, 1985, A Comprehensive Grammar of Contemporary English, Longman, London . Radford, A. 2004. English syntax: An introduction. Cambridge, UK: Cambridge University Press. Thomas, L. 1993. Beginning syntax. Oxford, UK: Blackwell. External links https://arts.uottawa.ca/writingcentre/en/hypergrammar/the-parts-of-the-sentence http://grammar.ccc.commnet.edu/grammar/objects.htm http://englishplus.com/grammar/00000020.htm http://papyr.com/hypertextbooks/grammar/cl_oc.htm Syntactic entities English grammar