APA-viite (7. p.)

Não informado. (1952). Adult leadership. Adult Education Association of the United States of America.

Chicago-viite (17. p.)

Não informado. Adult Leadership. Washington: Adult Education Association of the United States of America, 1952.

MLA-viite (8. p.)

Não informado. Adult Leadership. Adult Education Association of the United States of America, 1952.

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