Raghavan, Maanasa; Skoglund, Pontus; Kelly E. Graf; Metspalu, Mait; Albrechtsen, Anders; Moltke, Ida; Rasmussen, Simon; Thomas W. Stafford Jr; Orlando, Ludovic; Ene Metspalu; Monika Karmin; Kristiina Tambets; Siiri Rootsi; Reedik Mägi; Paula F. Campos; Elena Balanovska; Oleg Balanovsky; Elza Khusnutdinova; Sergey Litvinov; Ludmila P. Osipova; Sardana A. Fedorova; Mikhail I. Voevoda; Michael DeGiorgio; Thomas Sicheritz-Ponten; Søren Brunak; Svetlana Demeshchenko; Toomas Kivisild; Richard Villems; Rasmus Nielsen; Mattias Jakobsson; Eske Willerslev (2013). „Upper Palaeolithic Siberian genome reveals dual ancestry of Native Americans”. Nature. 505 (7481): 87—91. PMC4105016. PMID24256729. doi:10.1038/nature12736.
pc.gc.ca
„Introduction”. Government of Canada. Parks Canada. 2009. Архивирано из оригинала 24. 4. 2011. г. Приступљено 9. 1. 2010. „Canada's oldest known home is a cave in Yukon occupied not 12,000 years ago like the U.S. sites, but at least 20,000 years ago”
„Pleistocene Archaeology of the Old Crow Flats”. Vuntut National Park of Canada. 2008. Архивирано из оригинала 22. 10. 2008. г. Приступљено 10. 1. 2010. „However, despite the lack of this conclusive and widespread evidence, there are suggestions of human occupation in the northern Yukon about 24,000 years ago, and hints of the presence of humans in the Old Crow Basin as far back as about 40,000 years ago.”
ucpress.edu
First Americans. Southern Methodist University-David J. Meltzer, B.A., M.A., Ph. D. новембар 2010. ISBN9780520267992. Приступљено 17. 11. 2009.CS1 одржавање: Формат датума (веза)
„Introduction”. Government of Canada. Parks Canada. 2009. Архивирано из оригинала 24. 4. 2011. г. Приступљено 9. 1. 2010. „Canada's oldest known home is a cave in Yukon occupied not 12,000 years ago like the U.S. sites, but at least 20,000 years ago”
„Pleistocene Archaeology of the Old Crow Flats”. Vuntut National Park of Canada. 2008. Архивирано из оригинала 22. 10. 2008. г. Приступљено 10. 1. 2010. „However, despite the lack of this conclusive and widespread evidence, there are suggestions of human occupation in the northern Yukon about 24,000 years ago, and hints of the presence of humans in the Old Crow Basin as far back as about 40,000 years ago.”