Crowther, J. G. (1966). Discoveries and inventions of the 20th century / by J.G. Crowther (5th ed.). Routledge.
Chicago Style (17th ed.) CitationCrowther, J. G. Discoveries and Inventions of the 20th Century / by J.G. Crowther. 5th ed. Routledge, 1966.
MLA (9th ed.) CitationCrowther, J. G. Discoveries and Inventions of the 20th Century / by J.G. Crowther. 5th ed. Routledge, 1966.
Warning: These citations may not always be 100% accurate.