@misc{US Bureau of the Census1971,
author = {US Bureau of the Census},
title= {Current Population Reports, Series P-20, No. 223, Social and economic variations in marriage, divorce, and remarriage: 1967},
year = {1971},
URL = {https://www.census.gov/hhes/socdemo/marriage/data/cps/p20-223/tables.html},
publisher = {US Government Printing Office},
address = {Washington, D.C.},
}