APA-Zitierstil (7. Ausg.)

(2000). Challenge to the Education and Lifelong Learning Services. [s.n.].

Chicago-Zitierstil (17. Ausg.)

Challenge to the Education and Lifelong Learning Services. [S.l.]: [s.n.], 2000.

MLA-Zitierstil (9. Ausg.)

Challenge to the Education and Lifelong Learning Services. [s.n.], 2000.