APA (7th ed.) Citation

Princeton Language Institute, Philip Lief Group, & DeMars, T. J. (1993). 21st century misspeller's dictionary. Dell Pub..

Chicago Style (17th ed.) Citation

Princeton Language Institute, Philip Lief Group, and T. J. DeMars. 21st Century Misspeller's Dictionary. New York, N.Y.: Dell Pub., 1993.

MLA (9th ed.) Citation

Princeton Language Institute, et al. 21st Century Misspeller's Dictionary. Dell Pub., 1993.