APA Style

Williamson, G. (2009). Katekismus singkat westminster 2 (the shorter catechism2) (cet. 3). Surabaya: Momentum.

MLA Style

Williamson, G.I.. "Katekismus singkat westminster 2 (the shorter catechism2)". cet. 3 Surabaya: Momentum, 2009. Buku SMP Athalia.