TIMOSHENKO, S., & YOUNG, D. (1956). Engineering mechanics (Ed.4.). McGraw-Hill International Book company.

TIMOSHENKO, S., and D.H YOUNG. Engineering Mechanics. Ed.4. Auckland: McGraw-Hill International Book company, 1956.

TIMOSHENKO, S., and D.H YOUNG. Engineering Mechanics. Ed.4. McGraw-Hill International Book company, 1956.