Cita APA (7th ed.)
National Research Council (U.S.). Polar Research Board, National Academies Press (U.S.), & ebrary, Inc. (2012). Lessons and legacies of the international polar year: 2007-2008. National Academies Press.
Cita Chicago (17th ed.)
National Research Council (U.S.). Polar Research Board, National Academies Press (U.S.), i Inc ebrary. Lessons and Legacies of the International Polar Year: 2007-2008. Washington, D.C.: National Academies Press, 2012.
Cita MLA (9th ed.)
National Research Council (U.S.). Polar Research Board, et al. Lessons and Legacies of the International Polar Year: 2007-2008. National Academies Press, 2012.
Atenció: Aquestes cites poden no estar 100% correctes.