The Big Red Book of Spanish Verbs (Paperback) (ISBN-13: 9780071591539)

David M. Stillman, Ph.D. is a well-known writer of foreign language textbooks, multimedia courses, and reference books. He holds a Ph.D. in Spanish linguistics from the University of Illinois and taught at Harvard, Boston University, and Cornell. He is a professor at The College of New Jersey where he teaches Italian, Spanish, French, and Hebrew.

Ronni L. Gordon, Ph.D. is a prominent author of foreign language textbooks, reference books, and materials for multimedia. She received her Ph.D. in Spanish language and Spanish and Latin American History and Literature from Rutgers University, and taught at Harvard and Boston University. She is an education consultant specializing in curriculum development in foreign languages, literature, and history, and teacher training.