Baddley, D., & Cannon, J. (1988). Progressive engineering materials. Hodder and Stoughton.
Lua i Stíl Chicago (17ú heag.)Baddley, D.F, agus J.A Cannon. Progressive Engineering Materials. London: Hodder and Stoughton, 1988.
Lua MLA (9ú heag.)Baddley, D.F, agus J.A Cannon. Progressive Engineering Materials. Hodder and Stoughton, 1988.
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