[Wikipedia source](https://en.wikipedia.org/wiki/Blanchard%27s_transsexualism_typology). [PDF source](http://docamitay.com/wp-content/uploads/2013/10/TMWWBQ.pdf). [Video source](https://www.youtube.com/watch?v=vkog2zBgKj8). [Video source](https://www.youtube.com/watch?v=J_mMi6AzEbE).