APA (7th ed.) Citation

Porterfield, J. D., & St. Pierre, R. W. (1992). Healthful aging. Dushkin Pub. Group.

Chicago Style (17th ed.) Citation

Porterfield, James D., and Richard W. St. Pierre. Healthful Aging. Guilford, CT: Dushkin Pub. Group, 1992.

MLA (9th ed.) Citation

Porterfield, James D., and Richard W. St. Pierre. Healthful Aging. Dushkin Pub. Group, 1992.