Não informado. (1990). New Directions for Adult and Continuing Education. Jessey Bass Publishers.
Čikaški stil citiranja (17. izdanje)Não informado. New Directions for Adult and Continuing Education. San Francisco, Calif: Jessey Bass Publishers, 1990.
MLA način citiranja (8. izdanje)Não informado. New Directions for Adult and Continuing Education. Jessey Bass Publishers, 1990.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.