Gaya APA

Olevianus, C. (1995). Firm Foundation, A : An Aid to Interpreting the Heidelberg Catechism . : Baker/Paternoster Press.

Gaya MLA

Olevianus, Caspar. "Firm Foundation, A : An Aid to Interpreting the Heidelberg Catechism". : Baker/Paternoster Press, 1995. Academic.