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Source: https://writers.stackexchange.com/a/5411
License name: CC BY-SA 3.0
License URL: https://creativecommons.org/licenses/by-sa/3.0/

I'm assuming that you're talking about doing citations in the style of Kate Turabian's book \*A Manual for Writers. (If that's not the case, than this answer may be incorrect.)

The Table of Contents for the seventh edition of the book is online [here](http://www.press.uchicago.edu/books/turabian/turabian_toc.html), and while I don't have access to it, any good library will have it. I'd first check out Part II, Chapter 17, section 17.5, "Additional Types of Published Sources". If that doesn't work, you can try section 17.7, "Informally Published Electronic Sources".

Failing all that, and if the book has no guidance for citing a CD-ROM. The current edition was "updated to reflect The Chicago Manual of Style, fifteenth edition" (according to the books' [website](http://www.press.uchicago.edu/books/turabian/manual/index.html)), so I think it would make sense to consult the Chicago Manual of Style as a fallback for this. CMOS 16th edition gives these examples of CD-ROM citations in entry 14.168:

> _The Chicago Manual of Style,_ 15th ed. (Chicago: University of Chicago Press, 2003), CD-ROM, 1.4.
> 
> Hicks, Rodney J. _Nuclear Medicine: From the Center of Our Universe._ Victoria, Austral.: ICE T Multimedia, 1996. CD-ROM

The differences between the two are unclear. Perhaps one is a multimedia CD-ROm and the other is not? I'm guessing the 1.4 is a version number?

At least the first example shows what to do where there's no primary author. (Like the case of the Bible, I'm guessing.)

[Here's the full CMOS entry](http://www.chicagomanualofstyle.org/16/ch14/ch14_sec168.html). (Note: link is accessible to CMOS subscribers-only, but CMOS is available in most libraries with decent reference sections.)

Original score: 1