qayum, A. (1965). economic criteria for foreign loans. National Planning Institute.
Chicago Style (17th ed.) Zitazioaqayum, A. Economic Criteria for Foreign Loans. cairo: National Planning Institute, 1965.
MLA (9th ed.) Zitazioaqayum, A. Economic Criteria for Foreign Loans. National Planning Institute, 1965.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.