MLA

Clegg, Ernest, et al. Kent : Battle of Britain, 1940-1941 / Drawn by Ernest Clegg. Produced for the Women's Land Army Benevolent Fund by Donald McCullough :, Reproduced by John Waddington Ltd., 0AD. https://collections.library.yale.edu/catalog/15309067.

APA, 6th edition

Clegg, E., McCullough, D., & Fund, W. L. A. B. (0 C.E.). Kent : Battle of Britain, 1940-1941 / drawn by Ernest Clegg. [Maps]. Produced for the Women's Land Army Benevolent Fund by Donald McCullough :, Reproduced by John Waddington Ltd., https://collections.library.yale.edu/catalog/15309067.