Peter Austin, One Thousand Languages (2008), p. 75, https://books.google.com/books?isbn=0520255607:"Kanuri is a major Saharan language spoken in the Lake Chad Basin in the Borno area of northeastern Nigeria, as well as in Niger, Kamerun, and Chad (where the variety is known as Kanembul[)]."
Stefan Goodwin, Africas Legacies Of Urbanization (2006),p. 191, https://books.google.com/books?isbn=0739133489:"...and further west the even more numerous Sara [western Central African Republic, southern Chad, and northern Kamerun."
Peoples of Africa: Burkina Faso-Comoros - Volume 2 (2001), p. 86, https://books.google.com/books?isbn=076147160X:"The Central African Republic is a land of many different peoples... The Sara (SAHR) live in the grain-growing lands of the north as well as across the border in Chad."
Nigeria 29 Ocak 2018 tarihinde Wayback Machine sitesinde arşivlendi. at CIA World Factbook: "Igbo 18%" out of a population of 177 million (2014 estimate)
Gambia keep poor records of its ethnic minorities. Estimated Gambian figure is 31,900 (2006) Ethnologue.com 4 Ekim 2012 tarihinde Wayback Machine sitesinde arşivlendi.
indiana.edu
nalrc.indiana.edu
National African Language Resource Center. "Yoruba"(PDF). Indiana University. 16 Eylül 2017 tarihinde kaynağından(pdf) arşivlendi. Erişim tarihi: 3 Mart 2014.
joshuaproject.net
Joshua Project. "Yoruba". United States Center for World Mission. 15 Aralık 2013 tarihinde kaynağından arşivlendi. Erişim tarihi: 3 Mart 2014.
Nigeria 29 Ocak 2018 tarihinde Wayback Machine sitesinde arşivlendi. at CIA World Factbook: "Igbo 18%" out of a population of 177 million (2014 estimate)
Gambia keep poor records of its ethnic minorities. Estimated Gambian figure is 31,900 (2006) Ethnologue.com 4 Ekim 2012 tarihinde Wayback Machine sitesinde arşivlendi.
Joshua Project. "Yoruba". United States Center for World Mission. 15 Aralık 2013 tarihinde kaynağından arşivlendi. Erişim tarihi: 3 Mart 2014.
National African Language Resource Center. "Yoruba"(PDF). Indiana University. 16 Eylül 2017 tarihinde kaynağından(pdf) arşivlendi. Erişim tarihi: 3 Mart 2014.
