Gaya APA

Siregar, I, K, I, C, &, M, Y. (2019). Implementasi Kebijakan Harm Reduction . : Deepublish.

Gaya MLA

Siregar, Indra, Kumalasari,, Ika, Chastanti, &, Muhammad, Yusuf. "Implementasi Kebijakan Harm Reduction". : Deepublish, 2019. S2-Pendidikan Agama Islam.