APA Style

Willis, S, L., Martin, M. (2005). Middle adulthood : a lifespan perspective / editors, Sherry L. Willis, Mike Martin. . Thousand Oaks, Calif.: Sage Publications.

MLA Style

Willis, Sherry, L.,., Martin, Mike. "Middle adulthood : a lifespan perspective / editors, Sherry L. Willis, Mike Martin.". Thousand Oaks, Calif.: Sage Publications, 2005. Text.