Cita APA (7a ed.)

Geist, H. (1981). The phychological aspects of the aging process with sociológical implications. R. E. Krieger.

Cita Chicago Style (17a ed.)

Geist, Harold. The Phychological Aspects of the Aging Process with Sociológical Implications. New York: R. E. Krieger, 1981.

Cita MLA (8a ed.)

Geist, Harold. The Phychological Aspects of the Aging Process with Sociológical Implications. R. E. Krieger, 1981.