NASH, W. A., & STURGESS, C. (1977). Theory and problems of strenght of materials.-- Ed.2. McGraw-Hill Book.

NASH, William A., and C.E.N STURGESS. Theory and Problems of Strenght of Materials.-- Ed.2. New York: McGraw-Hill Book, 1977.

NASH, William A., and C.E.N STURGESS. Theory and Problems of Strenght of Materials.-- Ed.2. McGraw-Hill Book, 1977.