APA aipamena

(1988). Inventors and discoverers: Changing our world. Washington, D.C: National Geographic Society.

Chicago Style aipamena

Inventors and Discoverers: Changing Our World. Washington, D.C: National Geographic Society, 1988.

MLA aipamena

Inventors and Discoverers: Changing Our World. Washington, D.C: National Geographic Society, 1988.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.