The sign of the four /
by A. Conan Doyle.

APA Citation

Doyle, A. Conan. (19001912). The sign of the four. Chicago: Henneberry Co..

MLA Citation

Doyle, Arthur Conan, 1859-1930. The Sign of the Four. Chicago: Henneberry Co., 19001912.

Warning: These citations may not always be complete (especially for serials).