Bourhis, Richard Y., and Rana Sioufi. “Assessing Forty Years of Language Planning on the Vitality of the Francophone and Anglophone Communities of Quebec.” Multilingua: Journal of Cross-Cultural and Interlanguage Communication Vol. 36, no. 5 (September 2017): 627–662. http://salsa.ling.utexas.edu/files/Bourhis_and_Sioufi_2017_Assessing_forty_years_of_language_planning.pdf.