Cita APA (7th ed.)
Patnaik, S. N., & Hopkins, D. A. (2004). Strength of materials: A unified theory. Elsevier/Butterworth-Heinemann.
Cita Chicago (17th ed.)
Patnaik, Surya N., i Dale A. Hopkins. Strength of Materials: A Unified Theory. Amsterdam ; Boston: Elsevier/Butterworth-Heinemann, 2004.
Cita MLA (9th ed.)
Patnaik, Surya N., i Dale A. Hopkins. Strength of Materials: A Unified Theory. Elsevier/Butterworth-Heinemann, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.