Αναφορές εγγραφής

Παραπομπή σε μορφή APA (7η εκδ.)
National Research Council (U.S.). Committee on Future Roles, Challenges, and Opportunities for the U.S. Geological Survey, & ebrary, Inc. (2001). Future roles and opportunities for the U.S. Geological Survey. National Academy Press.
Παραπομπή σε μορφή Chicago (17η εκδ.)
National Research Council (U.S.). Committee on Future Roles, Challenges, and Opportunities for the U.S. Geological Survey, και Inc ebrary. Future Roles and Opportunities for the U.S. Geological Survey. Washington, D.C.: National Academy Press, 2001.
Παραπομπή σε μορφή MLA (9th εκδ.)
National Research Council (U.S.). Committee on Future Roles, Challenges, and Opportunities for the U.S. Geological Survey, και Inc ebrary. Future Roles and Opportunities for the U.S. Geological Survey. National Academy Press, 2001.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.