APA (7e ed.) Bronvermelding
ebrary, Inc. (2005). Polar icebreaker roles and U.S. future needs: A preliminary assessment. National Academy Press.
Chicago (17e ed.) Bronvermelding
ebrary, Inc. Polar Icebreaker Roles and U.S. Future Needs: A Preliminary Assessment. Washington, D.C.: National Academy Press, 2005.
MLA (9e ed.) Bronvermelding
ebrary, Inc. Polar Icebreaker Roles and U.S. Future Needs: A Preliminary Assessment. National Academy Press, 2005.
Let op: Deze citaties zijn niet altijd 100% accuraat.