Meaningofmarriage
Catholic scholars Robert P. George and Jean Elshtain have put together a collection of essays, from scholars from many disciplines, defending traditional marriage, entitled The Meaning of Marriage: Family, State, Market, And Morals.  Table of Contents below. 

This volume brings together the best of contemporary scholarship on
marriage from a variety of disciplines—history, ethics, economics, law
and public policy, philosophy, sociology, psychiatry, political
science—to inform, and reform, public debate. Rigorous yet accessible,
these studies aim to rethink and re-present the case for marriage as a
positive institution and ideal that is in the public interest and
serves the common good.

Table of Contents

Foreword by Jean Bethke Elshtain, Laura Spellman Rockefeller Professor
of Social and Political Ethics at the University of Chicago and the
Thomas and Dorothy Leavy Chair in the Foundations of American Freedom
at Georgetown University

1 – "Sacrilege and Sacrament"
by Roger Scruton, professor of philosophy at the University of Buckingham

2 – "What About the Children? Liberal Cautions on Same- Sex
Marriage
"
by Don Browning, Alexander Campbell Professor Emeritus of
Religious Ethics and the Social Sociences at the University of Chicago
Divinity School and Elizabeth Marquardt, affiliate scholar at the
Institute for American Values

3 – "Changing Dynamics of the Family in Recent European History"
by Harold James, professor of history at Princeton University

4 – "Why Unilateral Divorce Has No Place in a Free Society"
by
Jennifer Roback Morse, research fellow at the Hoover Institution,
Stanford University

5 – "The Framers’ Idea of Marriage and Family"
by David F. Forte,
Charles R. Emrick Jr.-Calfee, Halter & Griswold Endowed Professor
of Law at Cleveland State University

6 – "The Family and the Laws"
by Hadley Arkes, Edward N. Ney
Professor of Jurisprudence and American Institutions at Amherst College

7 – "What’s Sex Got to do with It? Marriage, Morality, and
Rationality
"
by Robert P. George, McCormick Professor of Jurisprudence
and director of the James Madison Program in American Ideals and
Institutions at Princeton University

8 – "Soft Despotism and Same-Sex Marriage"
by Seana Sugrue,
associate professor and chairman of the department of political science
at Ave Maria University

9 – "(How) Does Marriage Protect Child Well-Being?"
by Maggie
Gallagher, president of the Institute for Marriage and Public Policy

10 – "The Current Crisis in Marriage Law, Its Origins, and Its
Impact
"
by Katherine Shaw Spaht, Jules F. and Frances L. Landry
Professor of Law at Louisiana State University

11 – "Suffer the Little Children: Marriage the Poor, and the
Commonweal
"
by W. Bradford Wilcox, assistant professor of sociology at
the University of Virginia