National Academy of Sciences (U.S.). Scientific, technical, and related societies of the United States. National Academy of Sciences.
Chicago-Zitierstil (17. Ausg.)National Academy of Sciences (U.S.). Scientific, Technical, and Related Societies of the United States. Washington: National Academy of Sciences.
MLA-Zitierstil (8. Ausg.)National Academy of Sciences (U.S.). Scientific, Technical, and Related Societies of the United States. National Academy of Sciences.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.