Cita APA (7a ed.)
ebrary, Inc. (2004). A vision for the International Polar Year 2007-2008. National Academies Press.
Cita Chicago Style (17a ed.)
ebrary, Inc. A Vision for the International Polar Year 2007-2008. Washington, D.C.: National Academies Press, 2004.
Cita MLA (9a ed.)
ebrary, Inc. A Vision for the International Polar Year 2007-2008. National Academies Press, 2004.
Precaución: Estas citas no son 100% exactas.