Longman Handy learner’s Dictionary of American English-Persian
Longman Language Activator
Longman Lexicon of Contemporary English
Longman Young Children’s Picture Dictionary
Merriam-Webster’s Collegiate Dictionary 11th edition
NTC’s Dictionary of American Slang And Colloquial Expressions
NTC’s American Idioms Dictionary
Oxford Advanced Learner’s Dictionary 10th edition
Oxford American Wordpower Dictionary