Cita APA (7a ed.)
Doyle, A. C., & Edwards, O. D. (1994). The valley of fear. Oxford University Press.
Cita Chicago Style (17a ed.)
Doyle, Arthur Conan, y Owen Dudley Edwards. The Valley of Fear. Oxford [England] ; New York: Oxford University Press, 1994.
Cita MLA (9a ed.)
Doyle, Arthur Conan, y Owen Dudley Edwards. The Valley of Fear. Oxford University Press, 1994.
Precaución: Estas citas no son 100% exactas.