GreenbergJ1960

Greenberg, Joseph H. (1960). General Classification of Central and South American Languages. Teoksessa Men and Cultures: Selected Papers of the Fifth International Congress of Anthropological and Ethnological Sciences, Philadelphia, September 1-9, 1956 (toim. Anthony F. C. Wallace), s. 791–794. Philadelphia: University of Pennsylvania Press.

Greenberg, Joseph H. (1960). General Classification of Central and South American Languages. In Men and Cultures: Selected Papers of the Fifth International Congress of Anthropological and Ethnological Sciences, Philadelphia, September 1-9, 1956 (edited by Anthony F. C. Wallace), pp. 791–794. Philadelphia: University of Pennsylvania Press.