Gaya APA
Williamson, G, I. (2011).
Katekismus Singkat Westminster 2 (The Shorter Catechism 2) (E : 4).
SURABAYA:
Penerbit Momentum.
Gaya MLA
Williamson, G., I..
"Katekismus Singkat Westminster 2 (The Shorter Catechism 2)".
E : 4
SURABAYA:
Penerbit Momentum,
2011.
Text.