Hacker News
- The 3-ladder system of social class in the U.S. (2012) http://sasamat.xen.prgmr.com/michaelochurch/wp/2012/09/10/the-3-ladder-system-of-social-class-in-the-u-s/ 7 comments
- The 3-ladder system of social class in the U.S. https://michaelochurch.wordpress.com/2012/09/09/the-3-ladder-system-of-social-class-in-the-u-s/ 3 comments