APA (7th ed.) Citation
Green, R. L. (1953). King Arthur and his Knights of the Round Table. Puffin Books.
Chicago Style (17th ed.) Citation
Green, Roger Lancelyn. King Arthur and His Knights of the Round Table. London: Puffin Books, 1953.
MLA (9th ed.) Citation
Green, Roger Lancelyn. King Arthur and His Knights of the Round Table. Puffin Books, 1953.
Warning: These citations may not always be 100% accurate.