Rogers, T. (1973). Easy to be hard: By Tom Rogers. Surrey.
Chicagoスタイル(17版)引用形式Rogers, Tom. Easy to Be Hard: By Tom Rogers. San Diego, Calif.: Surrey, 1973.
MLA(8版)引用形式Rogers, Tom. Easy to Be Hard: By Tom Rogers. Surrey, 1973.
警告: この引用は必ずしも正確ではありません.