APA (7th ed.) Citation

Hardy, A. C., & Dunn, L. (1943). Warships at work: An illustrated book explaining the functions of all important types of warships. Penguin Books.

Chicago Style (17th ed.) Citation

Hardy, Arthur Cobb, and Laurence Dunn. Warships at Work: An Illustrated Book Explaining the Functions of All Important Types of Warships. London [u. a.]: Penguin Books, 1943.

MLA (9th ed.) Citation

Hardy, Arthur Cobb, and Laurence Dunn. Warships at Work: An Illustrated Book Explaining the Functions of All Important Types of Warships. Penguin Books, 1943.