Balasubramanyan, V. N., & Bates, J. M. (1993). Topics in policy appraisal. St. Martin's Press.
Chicago Style aipamenaBalasubramanyan, V. N., and John Maynard Bates. Topics in Policy Appraisal. New York: St. Martin's Press, 1993.
MLA aipamenaBalasubramanyan, V. N., and John Maynard Bates. Topics in Policy Appraisal. St. Martin's Press, 1993.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.