HIGGINS,R.A. (1983). ENGINEERING METALLURGY PART-I APPLIED PHYSICAL METALLYRGY. HODDER & STOUGHON.
Lua i Stíl Chicago (17ú heag.)HIGGINS,R.A. ENGINEERING METALLURGY PART-I APPLIED PHYSICAL METALLYRGY. HODDER & STOUGHON, 1983.
Lua MLA (9ú heag.)HIGGINS,R.A. ENGINEERING METALLURGY PART-I APPLIED PHYSICAL METALLYRGY. HODDER & STOUGHON, 1983.
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