Reddit reviews What Works for Women at Work: Four Patterns Working Women Need to Know

A book I really like is “What Works For Women At Work” by Joan C Williams

https://www.amazon.com/What-Works-Women-Work-Patterns-ebook/dp/B00GXA1QN6

http://www.kalzumeus.com/2012/01/23/salary-negotiation/ is my go to tactic for negotiating, although it's geared specifically for software jobs. It's definitely helped me out immensely with salary negotiation, especially since that's a trickier field for women. We have to be much more careful in our wording, lest is be mistaken for being "aggressive".

I also found that What Works for Women at Work by Joan Williams to be an incredibly helpful guide to navigating negotiation and a career.

Except for Williams this wasn't a single incident of being treated, in her view and the view of many watching, unfairly. That is the problem with systemic sexism. All the little pushes (the catsuit, the snickers about her rocking body, the unequal pay) are always with you, even if you have managed to push them way down. When something like this happens, outside observers view it as an isolated incident, to be judged solely by the facts of that moment with benefit of the doubt being given to the USTA. But to her, I bet it was another small incident that piles up evidence on the mountain of small inequities over the years. I'm a woman, a few years older than Sabrina Williams. And in my experience, the benefit of the doubt should be with women who speak up about unfair treatment. Because unequal treatment of men and women in workplaces is the norm, not the exception.

I don't have statistical data on what this particular umpire usually rules, but there are oceans of statistics about the implicit biases that women face in the workplace, particularly women of color. https://www.amazon.com/dp/B00GXA1QN6/ref=dp-kindle-redirect?_encoding=UTF8&btkr=1 has a great summary of research up to a few years ago.