APA Style
Billy, K. (2021).
Sola Gratia Dei: Buku Pegangan Soteriologi (1st).
Surabaya:
Momentum Christian Literature.
MLA Style
Billy, Kristanto-.
"Sola Gratia Dei: Buku Pegangan Soteriologi".
1st
Surabaya:
Momentum Christian Literature,
2021.
Paperback.