APA Style
Berkhof, L., Trust, B, O, T. (1938).
Summary of Christian doctrine (Ed. 31).
Grand Rapids:
Wm. B. Eerdman.
MLA Style
Berkhof, Louis., Trust, Banner, Of, Truth.
"Summary of Christian doctrine".
Ed. 31
Grand Rapids:
Wm. B. Eerdman,
1938.
Text.