Cita APA
Porterfield, J. D., & St. Pierre, R. W. (1992). Healthful aging. Dushkin Pub. Group.
Citación estilo Chicago
Porterfield, James D., and Richard W. St. Pierre. Healthful Aging. Guilford, CT: Dushkin Pub. Group, 1992.
Cita MLA
Porterfield, James D., and Richard W. St. Pierre. Healthful Aging. Dushkin Pub. Group, 1992.
Warning: These citations may not always be 100% accurate.