Hahn, Theophilus. 1870. "Die Sprache Der Nama." Leipzig.

Hagman, Roy S. 1977. "Nama Hottentot Grammar." 15: Bloomington: Indiana University.

Hagège, Claude. 1970. "La Langue Mbum De Nganha (Cameroun): Phonologie - Grammaire." 18: Paris: Centre National de la Récherche Sciéntifique.

Haacke, Wilfrid, Eliphas Eiseb and Levi Namaseb. 1997. "Internal and External Relations of Khoe-Khoe Dialects: A Preliminary Survey." In Namibian Languages: Reports and Papers, edited by W. H. G. Haacke and E. D. Elderkin. 4: 125-209. Köln: Rüdiger Köppe.

Haacke, Wilfrid [Heinrich] [Gerhard]. 1999. "Phonological Gleanings From the Dialects of Khoekhoegowab (Nama/Damara): Towards Internal Reconstruction." In African mosaic: festschrift for J.D. Louw, edited by Rosalie Finlayson. 131-163. Pretoria: Univ. of South Africa (UNISA).

Haacke, Wilfrid H. G. 2007. "Linguistic Hypotheses On the Origin of Namibian Khoekhoe Speakers." In Sprache und Geschichte in Afrika, 18: 69-86.

Haacke, Wilfrid Heinrich Gerhard. 2008. "Linguistic Hypotheses On the Origin of Namibian Khoekhoe Speakers." In Khoekhoe and the origins of herding in southern Africa, 20(1): 163-177. Pietermaritzburg, South Africa: Interpak Books.

Guthrie, Malcolm. 1971. "The Western Bantu Languages." In Linguistics in Sub-Saharan Africa, edited by Thomas A. Sebeok. 7: 357-366. Mouton de Gruyter.

Güldemann, Tom and Rainer Vossen. 2000. "Khoisan." In African Languages: An Introduction, edited by Bernd Heine and Derek Nurse. 99-122. Cambridge University Press.

Güldemann, T. and E. D. Elderkin. 2005. "On the External Genealogical Relationships of the Khoe Family." In Khoisan Language and Linguistics: the Riezlern Symposium 2003, edited by M. Brenzinger and C. König. 17: Köln: Rüdiger Köppe.