APA

Pratt F. E., . (1977). Teaching about aging. Boulder, Colo: ERIC Clearinghouse for Social Studies/Social Science Education, and Social Science Education Consortium, inc.

Chicago

Pratt Francis E, . 1977. Teaching about aging. Boulder, Colo: ERIC Clearinghouse for Social Studies/Social Science Education, and Social Science Education Consortium, inc.

Harvard

Pratt F. E., . (1977). Teaching about aging. Boulder, Colo: ERIC Clearinghouse for Social Studies/Social Science Education, and Social Science Education Consortium, inc.

MLA

Pratt Francis E, . Teaching about aging. Boulder, Colo: ERIC Clearinghouse for Social Studies/Social Science Education, and Social Science Education Consortium, inc. 1977.