Friedrich, K. (1974). International economics: Concepts and issues. McGraw-Hill.
Chicagoスタイル(17版)引用形式Friedrich, Klaus. International Economics: Concepts and Issues. New York: McGraw-Hill, 1974.
MLA(9版)引用形式Friedrich, Klaus. International Economics: Concepts and Issues. McGraw-Hill, 1974.
警告: この引用は必ずしも正確ではありません.