I'm writing a 10 page research paper on attraction and bettering yourself. (Before you go off please understand I am writing this for myself. I chose the topic to force myself to begin learning the nitty gritty and learning and understanding enough to write about it. I'm not on a mission to spread the word or gain validation from my peers.) Most of the sources I've found either briefly cover SMV or claim it's only about higher marital status. I am looking for a source that confirms Rollo Tomassis theory (I don't want to cite a blog). I'm not attempting to be lazy and not do my research, I'm still looking. I'm wondering if anybody has found a source themselves. Because I can't properly source the hypergamy section in my paper I'm having difficulty getting this thing off the ground.

Has anybody found anything themselves?