1. Alecsandri, V. (2010). Phraseology as an autonomous linguistic discipline, LiBRI. Linguistic and Literary Broad Research and Innovation.
2. Ash, S., et al. (2004). Social class. In J. K. Chambers, P. Trudgill, & N. Schilling-Estes (Eds.), The handbook of language variation and change (pp. 402–422). Oxford: Blackwell.
3. Baker, M. (2001). The atoms of language. New York: Basic Books.
4. Beck, B. E. F. (1978). The metaphor as a mediator between semantic and analogic modes of thoughts. Current Anthropology, 19(1), 83–97.
5. Berwouts, K. (1989). Language and modernization: Kiswahili lexical expansion in the domain of the organization of the modern nation/state, working papers in Kiswahili No.5.