Wage Gap Myth Sources:
Here are just a butt ton of sources to debunk the wage gap. You can use all of them or just a few but all of them are basically going to say the same thing and are from reputable sources. Even added in some nice infographs as well to help explain things to the more "slow" people who don't understand.
Even More Sources
The creator of this infograph can be found here. The rest of his infographs can be found here.
Economist Diana Furchtgott-Roth of the Manhattan Institute