APA (7th ed.) Citation

NetLibrary, Inc, Carstensen, L. L., & Hartel, C. R. (2006). When I'm 64. National Academies Press.

Chicago Style (17th ed.) Citation

NetLibrary, Inc, Laura L. Carstensen, and Christine R. Hartel. When I'm 64. Washington, DC: National Academies Press, 2006.

MLA (9th ed.) Citation

NetLibrary, Inc, et al. When I'm 64. National Academies Press, 2006.