In depth:

Pre-Parenting: Nurturing your Child from Conception
Thomas R. Verny, M.D., ISBN 0-671-77524-3

Prenatal Parenting
Frederick Wirth, M.d. ISBN 0-06-039422-66

Our Need for Others, and it's Roots in Infancy
Josephine Klein ISBN 0-415-05879-1

Why Love Matters, how affection shapes a baby's brain
Sue Gerhardt, ISBN 1-58391-817-5

The Mind of Your Newborn Baby
David Chamberlain, ISBN 1-55643-264-X

The Prenatal Prescription
Peter Nathanielsz, M.D., Ph.D, ISBN 9-78006-957056

Molecules of Emotion, the Science Behind Mind-Body Medicine
Candace B. Pert, Ph.D., ISBN 978-0-684-84634-7