Harold Levine is the coauthor of The Joy of Vocabulary: An Advanced Guide to Mastering New WordsVocabulary for the High School Student, and Vocabulary for the College-Bound Student.

Norman Levine is an Associate Professor of English at City College of the City University of New York. He is the coauthor of The Joy of Vocabulary: An Advanced Guide to Mastering New Words, Vocabulary for the High School Student, and Vocabulary for the College-Bound Student.

Robert T. Levine is the coauthor of The Joy of Vocabulary: An Advanced Guide to Mastering New WordsVocabulary for the High School Student, and Vocabulary for the College-Bound Student.