Cita APA (7a ed.)
Havighurst, R. J. (1972). Developmental tasks and education (3rd ed.). Longmans.
Cita Chicago Style (17a ed.)
Havighurst, Robert J. Developmental Tasks and Education. 3rd ed. New York: Longmans, 1972.
Cita MLA (9a ed.)
Havighurst, Robert J. Developmental Tasks and Education. 3rd ed. Longmans, 1972.
Precaución: Estas citas no son 100% exactas.