APA
Ashok Kumar, University of Delhi. Department of Business Economics & University of Delhi. Department of Business Economics. (1992). Regional variation in agricultural productivity in. Delhi: University of Delhi India.
Chicago
Ashok Kumar, University of Delhi. Department of Business Economics and University of Delhi. Department of Business Economics. 1992. Regional variation in agricultural productivity in. Delhi: University of Delhi India.
Harvard
Ashok Kumar, University of Delhi. Department of Business Economics and University of Delhi. Department of Business Economics. (1992). Regional variation in agricultural productivity in. Delhi: University of Delhi India.
MLA
Ashok Kumar, University of Delhi. Department of Business Economics and University of Delhi. Department of Business Economics. Regional variation in agricultural productivity in. Delhi: University of Delhi India. 1992.
