APA (7th ed.) Citation

Doyle, A. C., & Edwards, O. D. (1993). A study in scarlet. Oxford University Press.

Chicago Style (17th ed.) Citation

Doyle, Arthur Conan, and Owen Dudley Edwards. A Study in Scarlet. Oxford, England ; New York: Oxford University Press, 1993.

MLA (9th ed.) Citation

Doyle, Arthur Conan, and Owen Dudley Edwards. A Study in Scarlet. Oxford University Press, 1993.