Gaya APA

Astutiningrum, R. (2018). Istiqomah until husnul khotimah (cet.1). Jakarta Selatan: Wahyu Qolbu.

Gaya MLA

Astutiningrum, Ririn. "Istiqomah until husnul khotimah". cet.1 Jakarta Selatan: Wahyu Qolbu, 2018. Text.