Willsmore, A. (1965). Modern production control (3rd.). Issac pitman & sons Ltd.
Lua i Stíl Chicago (17ú heag.)Willsmore, A. Modern Production Control. 3rd. London: Issac pitman & sons Ltd, 1965.
Lua MLA (9ú heag.)Willsmore, A. Modern Production Control. 3rd. Issac pitman & sons Ltd, 1965.
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