Cita APA (7th ed.)
Schwartz, A. N., & Peterson, J. A. (1979). Introduction to gerontology. Holt, Rinehart, and Winston.
Cita Chicago (17th ed.)
Schwartz, Arthur N., i James Alfred Peterson. Introduction to Gerontology. New York: Holt, Rinehart, and Winston, 1979.
Cita MLA (9th ed.)
Schwartz, Arthur N., i James Alfred Peterson. Introduction to Gerontology. Holt, Rinehart, and Winston, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.