Greenberg, Joseph H. 1978. Generalizations about Numeral Systems. In Joseph H. Greenberg, Charles A. Ferguson and Moravcsik, Edith A. (eds.), Universals of Human Language, Volume 3: Word Structure, 249–295. Stanford: Stanford University Press.
@incollection{Greenberg-1978, address = {Stanford}, author = {Greenberg, Joseph H.}, booktitle = {Universals of Human Language, Volume 3: Word Structure}, editor = {Joseph H. Greenberg, Charles A. Ferguson and Moravcsik, Edith A.}, pages = {249–295}, publisher = {Stanford University Press}, title = {Generalizations about Numeral Systems}, volume = {3}, year = {1978} }