APA (7th ed.) Citation

Ryan, D. L., & Young, D. (1992). Searching for valid instruments: Removing barriers to instrument selection. Univ. of Alberta, Department of Economics.

Chicago Style (17th ed.) Citation

Ryan, David L., and Denise Young. Searching for Valid Instruments: Removing Barriers to Instrument Selection. Edmonton, Alberta: Univ. of Alberta, Department of Economics, 1992.

MLA (9th ed.) Citation

Ryan, David L., and Denise Young. Searching for Valid Instruments: Removing Barriers to Instrument Selection. Univ. of Alberta, Department of Economics, 1992.