Cita APA (7th ed.)

SCHWARTZ, A. N., & TETERSON, J. Introduction to gerontology. Holt.

Cita Chicago (17th ed.)

SCHWARTZ, Arthur N., i James TETERSON. Introduction to Gerontology. New York: Holt.

Cita MLA (9th ed.)

SCHWARTZ, Arthur N., i James TETERSON. Introduction to Gerontology. Holt.