Gertner, J. (2019). The ice at the end of the world: An epic journey into Greenland's buried past and our perilous future (First edition.). Random House.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Gertner, Jon. The Ice at the End of the World: An Epic Journey into Greenland's Buried Past and Our Perilous Future. First edition. New York: Random House, 2019.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Gertner, Jon. The Ice at the End of the World: An Epic Journey into Greenland's Buried Past and Our Perilous Future. First edition. Random House, 2019.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.