Cita APA (7a ed.)

Sheikh, J. I., & Yesavage, J. A. (1986). Geriatric depression scale (GDS): Recent evidence and development of a shorter version. [s.n.].

Cita Chicago Style (17a ed.)

Sheikh, Javaid I., y Jerome A. Yesavage. Geriatric Depression Scale (GDS): Recent Evidence and Development of a Shorter Version. [S.l.]: [s.n.], 1986.

Cita MLA (9a ed.)

Sheikh, Javaid I., y Jerome A. Yesavage. Geriatric Depression Scale (GDS): Recent Evidence and Development of a Shorter Version. [s.n.], 1986.