APA (7th ed.) Citation

Doyle, A. C. (1969). The green flag: And other stories of war and sport. Books for Libraries Press.

Chicago Style (17th ed.) Citation

Doyle, Arthur Conan. The Green Flag: And Other Stories of War and Sport. Freeport, N.Y.: Books for Libraries Press, 1969.

MLA (9th ed.) Citation

Doyle, Arthur Conan. The Green Flag: And Other Stories of War and Sport. Books for Libraries Press, 1969.