I was fortunate enough to study under more than one university professor in my undergraduate years who had strong groundings in rigorous feminist study, one in particular I recall being more helpful than most. Alas, time constraints still meant that I never had the chance to delve too much into the same topic. Were I not so stretched thin with my scheme of multiple majors, I likely would've joined the other students and professors in pursuing gender studies more effectively, especially considering how media effects upon limited gender representation was a very popular topic in my field of study. While I've learned quite a lot about feminist analysis through indirect osmosis, I still consider my own foundations in gender studies to be rather shaky.
Here, listed in a probably unorganized manner, are the books from my own library that touch on the topic of gender expression and representation in some way or another. (Healthy and unhealthy varieties, in unequal measure.)