Gaya APA

Doyle, A, C. (2019). Sherlock Holmes: The Valley of Fear (Lembah Ketakutan) (Cet. 4). : GRAMEDIA PUSTAKA UTAMA.

Gaya MLA

Doyle, Arthur, Conan. "Sherlock Holmes: The Valley of Fear (Lembah Ketakutan)". Cet. 4 : GRAMEDIA PUSTAKA UTAMA, 2019. print.