Gaya APA

Triana, I, Y. (2020). Gemar Menolong Sesama (1st ed.). Surabaya: IRAVI JAYA.

Gaya MLA

Triana, Irvianti, Yulia. "Gemar Menolong Sesama". 1st ed. Surabaya: IRAVI JAYA, 2020. Text.