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.