APA (7th ed.) Citation

Hill, R. D. (2008). Seven strategies for positive aging. W.W. Norton.

Chicago Style (17th ed.) Citation

Hill, Robert D. Seven Strategies for Positive Aging. New York [etc.]: W.W. Norton, 2008.

MLA (9th ed.) Citation

Hill, Robert D. Seven Strategies for Positive Aging. W.W. Norton, 2008.