Source: http://www.univ-bejaia.dz/jspui/bitstream/123456789/698/1/Etude%20sociolinguistique%20et%20s%C3%A9miopragmatique%20de%20l%E2%80%99alternance%20%20codique%20dans%20la%20publicit%C3%A9%20radiophonique%20en%20Alg%C3%A9rie.pdf