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Ngambay (also known as Sara, Sara Ngambai, Gamba, Gambaye, Gamblai and Ngambai) is one of the major languages spoken by Sara people in southwestern Chad, northeastern Cameroon and eastern Nigeria, with about a million native speakers. Ngambay is the most widely spoken of the Sara languages, and is used as a trade language between speakers of other dialects. It is spoken by the Sara Gambai people.
^ 50 Lessons in Sara-Ngambay, Volume 1., by Linda J. Thayer, James E. Thayer, Noé Kyambé and Adoum Eloi Gondjé. Indiana University, 1971. Accessed November 2008.