APA استشهاد

Savage, R. (1973). Intellectual functioning in the aged. Methuen.

استشهاد بنمط شيكاغو

Savage, R.D. Intellectual Functioning in the Aged. London: Methuen, 1973.

MLA استشهاد

Savage, R.D. Intellectual Functioning in the Aged. Methuen, 1973.