APA
Berman E., Bui L. T., . (1998). Environmental regulation and productivity : evidence from oil refineries. Cambridge, Mass: National Bureau of Economic Research.
Chicago
Berman Eli, Bui Linda T.M, . 1998. Environmental regulation and productivity : evidence from oil refineries. Cambridge, Mass: National Bureau of Economic Research.
Harvard
Berman E., Bui L. T., . (1998). Environmental regulation and productivity : evidence from oil refineries. Cambridge, Mass: National Bureau of Economic Research.
MLA
Berman Eli, Bui Linda T.M, . Environmental regulation and productivity : evidence from oil refineries. Cambridge, Mass: National Bureau of Economic Research. 1998.