Lewis, H. R., & Lewis, M. E. (1980). The parent's guide to teenage sex and pregnancy. St. Martin's Press.

Lewis, Howard R., and Martha E. Lewis. The Parent's Guide to Teenage Sex and Pregnancy. New York: St. Martin's Press, 1980.

Lewis, Howard R., and Martha E. Lewis. The Parent's Guide to Teenage Sex and Pregnancy. St. Martin's Press, 1980.