Langdon-Davies, J. (1949). Russia puts the clock back: A study of Soviet science and some British scientists. Victor Gollancz.
Lua i Stíl Chicago (17ú heag.)Langdon-Davies, John. Russia Puts the Clock Back: A Study of Soviet Science and Some British Scientists. London: Victor Gollancz, 1949.
Lua MLA (8ú heag.)Langdon-Davies, John. Russia Puts the Clock Back: A Study of Soviet Science and Some British Scientists. Victor Gollancz, 1949.
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