APA (7th ed.) Citation

Doyle, A. C. The Firm of Girdlestone.

Chicago Style (17th ed.) Citation

Doyle, Arthur Conan. The Firm of Girdlestone.

MLA (9th ed.) Citation

Doyle, Arthur Conan. The Firm of Girdlestone.

Warning: These citations may not always be 100% accurate.