Ledin, G. (1980). A structured approach to essential basic. San Francisco, Calif: Boyd & Fraser Pub. Co.
シカゴスタイル引用形Ledin, George. A Structured Approach to Essential Basic. San Francisco, Calif: Boyd & Fraser Pub. Co, 1980.
MLA引用形式Ledin, George. A Structured Approach to Essential Basic. San Francisco, Calif: Boyd & Fraser Pub. Co, 1980.
警告: この引用は必ずしも正確ではありません.