Gaya APA
Bierma, L, D. (2005).
An Introduction to the Heidelberg Catechism; Sources, History, and Theology .
Michigan:
Baker Academic.
Gaya MLA
Bierma, Lyle, D.
"An Introduction to the Heidelberg Catechism; Sources, History, and Theology".
Michigan:
Baker Academic,
2005.
.