Crowther, J. G. (1966). Discoveries and inventions of the 20th century. London: Routledge & K. Paul.
シカゴスタイル引用形Crowther, J. G. Discoveries and Inventions of the 20th Century. London: Routledge & K. Paul, 1966.
MLA引用形式Crowther, J. G. Discoveries and Inventions of the 20th Century. London: Routledge & K. Paul, 1966.
警告: この引用は必ずしも正確ではありません.