APA-Zitierstil (7. Ausg.)

(1997). Preparing for the 21st century: The environment and the human future. The Academy.

Chicago-Zitierstil (17. Ausg.)

Preparing for the 21st Century: The Environment and the Human Future. [Washington, D.C.]: The Academy, 1997.

MLA-Zitierstil (9. Ausg.)

Preparing for the 21st Century: The Environment and the Human Future. The Academy, 1997.