Theme : essay: writing about problems and solutions

References

1. 
   Vocabulary and Spelling Success in 20 Minutes a Day, 3rd Edition (New York: LearningExpress, 2002). Devine, Felice. Goof-Proof Spelling (New York: LearningExpress, 2003).
   
2. 
   1,001 Vocabulary and Spelling Questions, 2nd Edition (New York: LearningExpress, 2003).
   
3. 
   Agnes, Michael. Webster’s New World Pocket Misspeller’s Dictionary (New York: Hungry Minds, 1997). Devine, Felice. Goof-Proof Grammar (New York: LearningExpress, 2003).
   
4. 
   501 Grammar and Writing Questions (New York: LearningExpress, 1999).
   
5. 
   Grammar Essentials, 2nd edition (New York: LearningExpress, 2000).
   
6. 
   Straus, Jane. The Blue Book of Grammar and Punctuation, 7th edition (Mill Valley: Jane Straus, 2001).