Gaya APA

DOYLE, S, A, C. (2019). THE MEMOIRS OF SHERLOCK HOLMES THE SIGN OF THE FOUR (CETAKAN PERTAMA). JOGJAKARTA: Immortal Publishing.

Gaya MLA

DOYLE, SIR, ARTHUR, CONAN. "THE MEMOIRS OF SHERLOCK HOLMES THE SIGN OF THE FOUR". CETAKAN PERTAMA JOGJAKARTA: Immortal Publishing, 2019. Text.