APA (7th ed.) Citation
Gulland, D. M., & Hinds-Howell, D. (2001). The Penguin dictionary of English idioms (2nd ed.). Penguin.
Chicago Style (17th ed.) Citation
Gulland, Daphne M., and David Hinds-Howell. The Penguin Dictionary of English Idioms. 2nd ed. London ; New York: Penguin, 2001.
MLA (9th ed.) Citation
Gulland, Daphne M., and David Hinds-Howell. The Penguin Dictionary of English Idioms. 2nd ed. Penguin, 2001.
Warning: These citations may not always be 100% accurate.