Three of them;
about naughtiness and frogs and historical pictures.
APA Citation
Doyle, A. Conan. (1919). Three of them: about naughtiness and frogs and historical pictures. New York: Doran.
MLA Citation
Doyle, Arthur Conan, Sir, 1859-1930. Three of Them: About Naughtiness And Frogs And Historical Pictures. New York: Doran, 1919.
Warning: These citations may not always be complete (especially for serials).