Gaya APA

Doyle, S, A, C., Ismanto, . (2016). THE SIGN OF FOUR : MISTERI EMPAT TANDA . YOGYAKARTA: Indoliterasi.

Gaya MLA

Doyle, Sir, Arthur, Conan., Ismanto, . "THE SIGN OF FOUR : MISTERI EMPAT TANDA". YOGYAKARTA: Indoliterasi, 2016. Text.