Russell, B. (1961). Has man a future? Penguin Books.
Chicagoスタイル(17版)引用形式Russell, Bertrand. Has Man a Future? Harmondsworth: Penguin Books, 1961.
MLA(8版)引用形式Russell, Bertrand. Has Man a Future? Penguin Books, 1961.
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