SPOTTS, M., & SHOUP, T. (1998). Design of machine element (Ed.7.). Prentice-Hall International.
Lua i Stíl Chicago (17ú heag.)SPOTTS, M.F, agus T.E SHOUP. Design of Machine Element. Ed.7. New Jersey: Prentice-Hall International, 1998.
Lua MLA (9ú heag.)SPOTTS, M.F, agus T.E SHOUP. Design of Machine Element. Ed.7. Prentice-Hall International, 1998.
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