Mate Selection in the Upper Class - Rosen, Lawrence and Bell, Robert R. (The Sociological Quarterly, 1966)
https://katalog.adlr.link/Record/ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuMTExMS9qLjE1MzMtODUyNS4xOTY2LnRiMDE2ODUueA