References

Beyer, Thomas R. 501 English Verbs: Fully Conjugated in All Tenses in New
     Easy-to-learn Format
. New York: Baron's Educational Series, Inc. 1998.

Crystal, David. The Cambridge Encyclopedia of the English Language.
     Cambridge: Cambridge University Press. 1995.

Emerson, Henry P., and Bender, Ida C. Modern English, Book Two. New York:
     The Macmillan Company. 1914.

Forlini, Gary., et al. Grammar and Composition, Level 5. Englewood Cliffs:
     Prentice-Hall, Inc. 1982

Greenbaum, Sidney. The Oxford English Grammar. Oxford:
     Oxford University Press. 1996

Huddleston, Rodney., and Pullum, Jeoffrey K. The Cambridge Grammar
     of the English Language
. Cambridge: Cambridge University Press. 2002

Kolln, Martha., and Funk, Robert. Understanding English Grammar:
     Sixth Edition
. New York: Longman. 2002.

Quirk, Randolph., et al. A Comprehensive Grammar of the English Language.
     London: Longman. 1985.

Wilson, Kenneth G. The Columbia Guide to Standard American English.
     New York: Columbia University Press. 1993.


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