Author	Title	Edition	Publisher	Year	Series	Number	ISBN	ISSN	URL
Schultz, Theodore William and National Bureau of Economic Research and Population Council	Economics of the family : marriage, children, and human capital : a conference report of the National Bureau of Economic Research		Published for the National Bureau of Economic Research by the University of Chicago Press	1974			0226740854		https://ci.nii.ac.jp/ncid/BA06244045