Micheal. E. Lamb & Abraham Sagi 
Fatherhood and Family Policy [PDF ebook] 

First published in 1984. In the last two decades, countries throughout the Western world have witnessed dramatic changes in social attitudes concerning sex roles. The aim of this book is to review the evidence concerning: a) the factors that limit or constrain male involvement in child care; b) the ways in which some of these factors are being or might be changed; and c) the effects of traditional and increased paternal involvement on men, women, and children.