Gaya APA
Poythress, V, S. (2013).
Logic : a God-centered approach to the foundation of western thought .
Wheaton, Illinois:
Crossway Books.
Gaya MLA
Poythress, Vern, Sheridan.
"Logic : a God-centered approach to the foundation of western thought".
Wheaton, Illinois:
Crossway Books,
2013.
e-book.