ebrary, Inc, Symposium on the Origins of Language, & Landsberg, M. E. (1988). The genesis of language: A different judgement of evidence. Mouton de Gruyter.

ebrary, Inc, Symposium on the Origins of Language, and Marge E. Landsberg. The Genesis of Language: A Different Judgement of Evidence. Berlin ; New York: Mouton de Gruyter, 1988.

ebrary, Inc, et al. The Genesis of Language: A Different Judgement of Evidence. Mouton de Gruyter, 1988.