score:3
My copy of "The Comprehensive New Testament" (Edited by T E & J Clontz, published by Cornerstone) lists a number of cross-references for Eph 5:14.
Note that these do not mean that all these are sources for Eph 5:14, far from it. The OT references are probably the sources. It simply means that all these references have similar wording or ideas. This means that some of the later references could be quoting or alluding to Ephesians; or, they could both be quoting from a common (now lost) sources. We cannot be sure.