【作者(必填)】 Hillard Kaplan
【文题(必填)】A theory of fertility and parental investment in traditional and modern human societies
【年份(必填)】 
Volume 101, Issue Supplement 23, pages 91–135, 1996
【全文链接或数据库名称(选填)】
http://onlinelibrary.wiley.com/doi/10.1002/(SICI)1096-8644(1996)23%2B%3C91::AID-AJPA4%3E3.0.CO;2-C/abstract