Dryden, R. (1978). Before birth. Heinemann Educational.
Chicagoスタイル(17版)引用形式Dryden, Richard. Before Birth. London [etc.]: Heinemann Educational, 1978.
MLA(8版)引用形式Dryden, Richard. Before Birth. Heinemann Educational, 1978.
警告: この引用は必ずしも正確ではありません.
APA(7版)引用形式