Gaya APA
Doyle, S, A, C.
(2019).
THE SIGN OF THE FOUR
.
JAKARTA:
PT GRAMEDIA PUSTAKA UTAMA.
Gaya MLA
Doyle, Sir, Arthur, Conan.
"THE SIGN OF THE FOUR".
JAKARTA:
PT GRAMEDIA PUSTAKA UTAMA,
2019.
Text.