APA Style

Solzhenitysn, A, I. (2018). Gulag . Sleman, Yogyakarta, Indonesia: Penerbit Bentang (PT Bentang Pustaka.

MLA Style

Solzhenitysn, Aleksandr, I. "Gulag". Sleman, Yogyakarta, Indonesia: Penerbit Bentang (PT Bentang Pustaka, 2018. Printed Book.