Bowman, H. A., & Spanier, G. B. a. Modern marriage (8th.ed.). McGraw-Hill.

Bowman, Henry A., and Graham B.,joint author Spanier. Modern Marriage. 8th.ed. New York: McGraw-Hill.

Bowman, Henry A., and Graham B.,joint author Spanier. Modern Marriage. 8th.ed. McGraw-Hill.