Bartley, William Clark. Counting on tradition: Iñupiaq numbers in the school setting. Hankes, Judith Elaine; Fast, Gerald R. (编). Perspectives on Indigenous People of North America. Changing the Faces of Mathematics. Reston, Virginia: National Council of Teachers of Mathematics. 2002: 225–236. ISBN 978-0873535069.
books.google.com
Engblom-Bradley, Claudette. Seeing mathematics with Indian eyes. Williams, Maria Sháa Tláa (编). The Alaska Native Reader: History, Culture, Politics. Duke University Press. 2009: 237–245. ISBN 9780822390831. See in particular p. 244 （页面存档备份，存于互联网档案馆）.
uaf.edu
ankn.uaf.edu
Bartley, Wm. Clark. Making the Old Way Count(PDF). Sharing Our Pathways. January–February 1997, 2 (1): 12–13 [February 27, 2017]. （原始内容存档(PDF)于2013-06-25）.
Bartley, Wm. Clark. Making the Old Way Count(PDF). Sharing Our Pathways. January–February 1997, 2 (1): 12–13 [February 27, 2017]. （原始内容存档(PDF)于2013-06-25）.
Engblom-Bradley, Claudette. Seeing mathematics with Indian eyes. Williams, Maria Sháa Tláa (编). The Alaska Native Reader: History, Culture, Politics. Duke University Press. 2009: 237–245. ISBN 9780822390831. See in particular p. 244 （页面存档备份，存于互联网档案馆）.
