(1988). Inventors and discoverers: Changing our: World. National Geographic Society.
Chicago Style (17th ed.) CitationInventors and Discoverers: Changing Our: World. Washington D.C.: National Geographic Society, 1988.
MLA citiranjeInventors and Discoverers: Changing Our: World. National Geographic Society, 1988.
Opozorilo: Ti citati niso vedno 100% točni.