RICHARD & LITTLE, S. (1979). The basic book of metal working. American Technical Pub.
Lua i Stíl Chicago (17ú heag.)RICHARD agus Sherry LITTLE. The Basic Book of Metal Working. Illinois: American Technical Pub, 1979.
Lua MLA (9ú heag.)RICHARD agus Sherry LITTLE. The Basic Book of Metal Working. American Technical Pub, 1979.
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