1. Amazon 2015 LEGO Pink Brick Box (5585) http://www.amazon.com/dp/B000Y8EPHW/ref=pdp_new_dp_review
2. American Civil Liberties Union 2013 Court approves settlement reached in challenge to West Virginia single-sex school program rooted in stereotypes https://www.aclu.org/news/court-approves-settlement-reached-challenge-west-virginia-single-sex-school-program-rooted
3. American Civil Liberties Union 2014 Teach kids, not stereotypes https://www.aclu.org/womens-rights/teach-kids-not-stereotypes
4. American Enterprise Institute 2013 Should single-sex schooling be eliminated? Debate between Christina Hoff Sommers and Lise Eliot http://www.aei.org/events/should-single-sex-schooling-be-eliminated/