Spencer, D. E. .. (1990). Study guide Parkin economics. Reading, Massachusetts: Addison-Wesley.
シカゴスタイル引用形Spencer, David E. Study Guide Parkin Economics. Reading, Massachusetts: Addison-Wesley, 1990.
MLA引用形式Spencer, David E. Study Guide Parkin Economics. Reading, Massachusetts: Addison-Wesley, 1990.
警告: この引用は必ずしも正確ではありません.