Gaya APA

Doyle, S, A, C. (2019). Sherlock Holmes The Sign of The Four (Cet. 1). Yogyakarta: Immortal Publishing.

Gaya MLA

Doyle, Sir, Arthur, Conan. "Sherlock Holmes The Sign of The Four". Cet. 1 Yogyakarta: Immortal Publishing, 2019. Text.