Doyle, A. C. (1974). The valley of fear ([1st ed. reprinted].). J. Murray : Cape.

Doyle, Arthur Conan. The Valley of Fear. [1st ed. reprinted]. London: J. Murray : Cape, 1974.

Doyle, Arthur Conan. The Valley of Fear. [1st ed. reprinted]. J. Murray : Cape, 1974.