Q. How do I cite a source from Ministry Matters using Chicago style?

Since Ministry Matters sources do not have page numbers, cite the section or chapter you consulted. You will also have to note that you got the source from Ministry Matters.

The citation will look something like this:

Day, Linda M. “Introduction.” In Esther. Abingdon Old Testament Commentaries. Nashville: Abingdon, 2005. Ministry Matters edition.

See the Chicago Manual of Style Quick Guide for information on citing a chapter of a book and for citing a book published electronically:
http://www.chicagomanualofstyle.org/tools_citationguide.html