Shapiro, Daniel M. Earnings Disparities in Quebec after Bill 101. Montreal: Concordia University, Department of Economics, 1985.

Shapiro, Daniel M., and Morton Stelcner. “Language Legislation and Male-Female Earning Differentials in Quebec.” Canadian Public Policy/Analyse de politiques Vol. 8, no. 1 (Winter 1982): 106–113.

Shapiro, Daniel M., and Morton Stelcner. “Male-Female Earnings Differentials and the Role of Language in Canada, Ontario and Quebec, 1970.” Canadian Journal of Economics/Revue canadienne d’économique Vol. 14, no. 2 (May 1981): 341–348.

Shapiro, Daniel M., and Morton Stelcner. “Earning Disparities Among Linguistic Groups in Quebec, 1970-1980.” Canadian Public Policy/Analyse de politiques Vol. 13, no. 1 (March 1987): 97–104.

Shapiro, Daniel M., and Morton Stelcner. “Language and Earnings in Quebec: Trends Over Twenty Years, 1970-1990.” Canadian Public Policy/Analyse de politiques Vol. 23, no. 2 (June 1997): 115–140. http://qed.econ.queensu.ca/pub/cpp/June97/shapiro.pdf.