APA

Darby M. R., .The U.S. Productivity Slowdown: A Case of Statistical Myopia. : .

Chicago

Darby Michael R, .The U.S. Productivity Slowdown: A Case of Statistical Myopia. : .

Harvard

Darby M. R., .The U.S. Productivity Slowdown: A Case of Statistical Myopia. : .

MLA

Darby Michael R, .: . .