Basic Format:
The Bible (version). (year of publication). Location: Publisher.
Here are a few examples of how to cite a commentary:
Commentary (print)
Von Rad, G. (1972). Genesis. (Rev. ed.). Old Testament Library. Philadelphia: The Westminster Press.
Commentary with individually written articles (online)
Fretheim, T. (1994). The Book of Genesis: Introduction, commentary, and reflection. In The New Interpreter's Bible: General articles & introduction, commentary, & reflections for each book of the Bible, including the Apocryphal/Deuterocanonical Books. Nashville: Abingdon Press, 1994. Retrieved from http://www.ministrymatters.com/library/#/nidb/75169ecf8a9200f5f8f719ca39de58b2/genesis-book-of.html.
Here are a few links to help you out with your APA citations.
Remember you can also use the "Cite this item" link in the library catalog as well.