1 2 Actes du Cinquième Colloque de Linguistique Nilo-Saharienne: 24 - 29 août 1992, Université de Nice Sophia-Antipolis = Proceedings of the Fifth Nilo-Saharan Linguistics Colloquium, Köln, Köppe, (ISBN978-3-927620-72-8)
↑ Marvin Lionel Bender et Thilo C. Schadeberg, Nilo-Saharan: Proceedings of the First Nilo-Saharan Linguistics Colloquium, Leiden, Ceptember 8-10, 1980, Berlin, Walter De Gruyter & Co, (ISBN978-3-11-088346-6)
↑ Proceedings of the third Nilo-Saharan Linguistics Colloquium: Kisumu, Kenya, August 4-9, 1986, Hamburg, Buske, (ISBN978-3-87548-001-6)
↑ Proceedings of the 4. Nilo-Saharan Conference: Bayreuth, Aug. 30 - Sep. 2, 1989, Hamburg, Buske, (ISBN978-3-87548-002-3)
↑ Proceedings of the Sixth International Nilo-Saharan Linguistics Conference, Santa Monica 1995, March 27-29.
↑ Proceedings of the 7th Nilo-Saharan Conference in Vienna, 2-6th September, 1998.
↑ Doris L. Payne, Mechthild Reh, Colloque de linguistique nilo-saharienne et Universität Hamburg, Advances in Nilo-Saharan linguistics: proceedings of the 8th Nilo-Saharan linguistics colloquium, University of Hamburg, August 22-25, 2001, Köln, R. Köppe, (ISBN978-3-89645-140-8)
↑ Insights into Nilo-Saharan language, history and culture: Proceedings of the 9th Nilo-Saharan Linguistics Colloquium, Institute of African and Asian Studies, University of Khartoum, 16-19 February 2004, Köln, Köppe, (ISBN978-3-89645-660-1, OCLCocm77077755)
↑ Nilo-Saharan: models and descriptions, Köln, Rüdiger Köppe Verlag, (ISBN978-3-89645-665-6) (Proceedings of the 11th Nilo-Saharan Linguistics Colloquium, University of Cologne, May 22–24, 2013)