NASH, W. A., & STURGESS, C. (1977). Theory and problems of strenght of materials.-- Ed.2. McGraw-Hill Book.
Lua i Stíl Chicago (17ú heag.)NASH, William A., agus C.E.N STURGESS. Theory and Problems of Strenght of Materials.-- Ed.2. New York: McGraw-Hill Book, 1977.
Lua MLA (9ú heag.)NASH, William A., agus C.E.N STURGESS. Theory and Problems of Strenght of Materials.-- Ed.2. McGraw-Hill Book, 1977.
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