Cita APA (7a ed.)
ebrary, Inc. (2005). Polar icebreaker roles and U.S. future needs: A preliminary assessment. National Academy Press.
Cita Chicago Style (17a ed.)
ebrary, Inc. Polar Icebreaker Roles and U.S. Future Needs: A Preliminary Assessment. Washington, D.C.: National Academy Press, 2005.
Cita MLA (9a ed.)
ebrary, Inc. Polar Icebreaker Roles and U.S. Future Needs: A Preliminary Assessment. National Academy Press, 2005.
Precaución: Estas citas no son 100% exactas.