International Symposium on Chadic Linguistics <1987, Boulder, Colo.>. (1989). Current progress in Chadic linguistics: Proceedings of the International Symposium on Chadic Linguistics, Boulder, Colorado, 1-2 May, 1987. J. Benjamins Pub. Co.
Chicago-Zitierstil (17. Ausg.)International Symposium on Chadic Linguistics <1987, Boulder, Colo.>. Current Progress in Chadic Linguistics: Proceedings of the International Symposium on Chadic Linguistics, Boulder, Colorado, 1-2 May, 1987. Amsterdam: J. Benjamins Pub. Co, 1989.
MLA-Zitierstil (9. Ausg.)International Symposium on Chadic Linguistics <1987, Boulder, Colo.>. Current Progress in Chadic Linguistics: Proceedings of the International Symposium on Chadic Linguistics, Boulder, Colorado, 1-2 May, 1987. J. Benjamins Pub. Co, 1989.