Não informado. (1952). Adult leadership. Adult Education Association of the United States of America.
Cita Chicago Style (17a ed.)Não informado. Adult Leadership. Washington: Adult Education Association of the United States of America, 1952.
Cita MLA (8a ed.)Não informado. Adult Leadership. Adult Education Association of the United States of America, 1952.
Precaución: Estas citas no son 100% exactas.