Gaya APA
Williamson, G., Tjulianto, I.
(2018).
Katekismus Heidelberg
(
First Edition)
.
Surabaya, Indonesia:
Momentum.
Gaya MLA
Williamson, G.I.., Tjulianto, Irwan.
"Katekismus Heidelberg".
First Edition
Surabaya, Indonesia:
Momentum,
2018.
Academic.