DONALDSON CYRIL. (2003). TOOL DESIGN (4TH.). TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED.
Lua i Stíl Chicago (17ú heag.)DONALDSON CYRIL. TOOL DESIGN. 4TH. NEW DELHI: TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED, 2003.
Lua MLA (9ú heag.)DONALDSON CYRIL. TOOL DESIGN. 4TH. TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED, 2003.
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