The plateau and the pinnacle.
MLA
Doyle, Arthur Conan, Sir, 1859-193, White, Maple. The plateau and the pinnacle.. 1912 Apr. https://collections.library.yale.edu/catalog/2014348.
APA, 6th edition
Doyle, Arthur Conan, Sir, 1859-193, & White, Maple. (1912 Apr)[The plateau and the pinnacle.]. https://collections.library.yale.edu/catalog/2014348.