Nobbs, J. (1973). Economics for advanced level. M.C. Graw hill.
シカゴスタイル引用形Nobbs, J.P.Jacks. Economics for Advanced Level. London: M.C. Graw hill, 1973.
MLA引用形式Nobbs, J.P.Jacks. Economics for Advanced Level. M.C. Graw hill, 1973.
警告: この引用は必ずしも正確ではありません.