Garmonsway, G. N., & Simpson, J. (1978). The Penguin English dictionary Penguin reference books.
Chicago Style (17th ed.) CitationGarmonsway, George Norman, and Jacqueline Simpson. "The Penguin English Dictionary." Penguin Reference Books 1978.
MLA (9th ed.) CitationGarmonsway, George Norman, and Jacqueline Simpson. "The Penguin English Dictionary." Penguin Reference Books, 1978.
Warning: These citations may not always be 100% accurate.