^Lynch, John; Malcolm Ross; Terry Crowley. The Oceanic languages. Richmond, Surrey: Curzon. 2002. OCLC 48929366.
Beard, R. (1992) Number. In W. Bright (ed.) International Encyclopedia of Linguistics.
Corbett, G. (2000). Number. Cambridge University Press.
Greenberg, Joseph H. (1972) Numeral classifiers and substantival number: Problems in the genesis of a linguistic type. Working Papers on Language Universals (Stanford University) 9. 1-39.
Laycock, Henry. (2005) 'Mass nouns, Count nouns and Non-count nouns' Encyclopedia of Language and Linguistics. Oxford: Elsevier.
Laycock, Henry. (2006) Words without Objects. Oxford: Clarendon Press.