P. Blumstein and P. Schwartz, American Couples (New York: William Morrow & Co., 1999).
41
Grace M. Egelanda, Aage Tverdala, Haakon E. Meyera, and Randi Selmera. A man’s heart and a wife’s education: A 12-year coronary heart disease mortality follow-up in Norwegian men // International Journal of Epidemiology 31, no. 4 (2002): 799–805.