This is my uneducated opinion, but unless a person was willing to physically hand in your resume, I wouldn't bother listing them on it.
Chances are, if it's mailed in for a pilot job, it goes in a stack of potentially thousands of other resumes and they're simply going to either computer scan it looking for key words, or quickly skim it.
But having a respected pilot personally walk in your resume will, in my experience, get your resume considered.
I've only had luck getting a person interviewed when I personally walked in a resume, talked about my experience flying with the person and adding a cheesy line like, 'we'd better pick this guy up before the competition does'.