Não informado. (1989). Adults Learning. National Institute of Adult Continuing Education.
Cita Chicago Style (17a ed.)Não informado. Adults Learning. Leicester, Inglaterra: National Institute of Adult Continuing Education, 1989.
Cita MLA (8a ed.)Não informado. Adults Learning. National Institute of Adult Continuing Education, 1989.
Precaución: Estas citas no son 100% exactas.