Accidental Brothers The Story of Twins Exchanged at Birth and the Power of Nature and Nurture by Dr. NancyL. Segal, Yesika S. Montoya Hardcover, 352 Pages, Published 2018 by St. Martin's Press ISBN-13: 978-1-250-10190-7, ISBN: 1-250-10190-5
Twin Mythconceptions(1st Edition) False Beliefs, Fables, and Facts about Twins by NancyL. Segal Paperback, 334 Pages, Published 2017 by Academic Press ISBN-13: 978-0-12-803994-6, ISBN: 0-12-803994-9
Indivisible by Two(1st Edition) Lives of Extraordinary Twins by NancyL. Segal Paperback, 288 Pages, Published 2007 by Harvard University Press ISBN-13: 978-0-674-02570-7, ISBN: 0-674-02570-9
Born Together - Reared Apart(Illustrated) The Landmark Minnesota Twin Study by NancyL. Segal Hardcover, 416 Pages, Published 2012 by Harvard University Press ISBN-13: 978-0-674-05546-9, ISBN: 0-674-05546-2