Não informado. (1976). Educational Gerontology. Hemisphere Publishing Corporation.
Style de citation Chicago (17e éd.)Não informado. Educational Gerontology. Washington: Hemisphere Publishing Corporation, 1976.
Style de citation MLA (8e éd.)Não informado. Educational Gerontology. Hemisphere Publishing Corporation, 1976.
Attention : ces citations peuvent ne pas être correctes à 100%.