Gaya APA

Ursinus, Z., Olevianus, C. (1993). Pengajaran Agama Kristen : Katekismus Heidelberg (Twenty Third). Jakarta, Indonesia: BPK Gunung Mulia.

Gaya MLA

Ursinus, Zacharias., Olevianus, Caspar. "Pengajaran Agama Kristen : Katekismus Heidelberg". Twenty Third Jakarta, Indonesia: BPK Gunung Mulia, 1993. Academic.