Olson, D. H. L., & Hill, R. (1989). Families: What makes them work (Updated ed.). Sage.
Chicago Style (17th ed.) CitationOlson, David H. L., and Reuben Hill. Families: What Makes Them Work. Updated ed. Newbury Park [etc.]: Sage, 1989.
MLA (9th ed.) CitationOlson, David H. L., and Reuben Hill. Families: What Makes Them Work. Updated ed. Sage, 1989.
Warning: These citations may not always be 100% accurate.