1. North-Holland Linguistic Series;R. Beard,1981
2. Beard, Robert. 1987. “Lexical Stock Expansion.” In: E. Gussmann (ed.) Rules and the Lexicon: Studies in Word Formation. Lublin: Catholic University Press, 24–41.
3. Beard, Robert. 1995. Lexeme Morpheme Base Morphology. Albany: Suny Press.
4. Belić, Aleksandar. 1958. O jezičkoj prirodi I jezičkom razvitku. Beograd: Nolit.
5. Stellenbosch Papers in Linguistics;R. Botha,1980