Pringle, P. (1955). Great discoverers in modern science. G. G. Harrap & Co.
Lua i Stíl Chicago (17ú heag.)Pringle, Patrick. Great Discoverers in Modern Science. London: G. G. Harrap & Co, 1955.
Lua MLA (9ú heag.)Pringle, Patrick. Great Discoverers in Modern Science. G. G. Harrap & Co, 1955.
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