Dyfyniad APA
Hibbeler,R.C, & Hibbeler R. C. (2014). Mechanics of materials (9th ed.). Pearson Education.
Dyfyniad Arddull Chicago
Hibbeler,R.C, and Hibbeler R. C. Mechanics of Materials. 9th ed. New Delli: Pearson Education, 2014.
Dyfyniad MLA
Hibbeler,R.C, and Hibbeler R. C. Mechanics of Materials. 9th ed. Pearson Education, 2014.
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