Roark, R. J. 1., Young, W. C. 1., & Young, W. C. (1989). Roark's formulas for stress and strain (6th ed.). New York: McGraw-Hill.
Παραπομπή Chicago StyleRoark, Raymond J. 1890-1966, Warren C. 1923- Young, and Warren C. Young. Roark's Formulas for Stress and Strain. 6th ed. New York: McGraw-Hill, 1989.
Παραπομπή MLARoark, Raymond J. 1890-1966, Warren C. 1923- Young, and Warren C. Young. Roark's Formulas for Stress and Strain. 6th ed. New York: McGraw-Hill, 1989.
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