1. Mechanic of Material;Gere,1994
2. A comparison of test methods for evaluating shear strength of structural lumber;Riyanto;Forest Product Journal,1998
3. An approximate torsion analysis of closed moderately thick-walled, thick-walled, and solid cross-section;Gurel;Turkish J. Eng. Env. Sci.,2008
4. ASTM. (2003). “Volume 04:10: D 198-02 Standard Test Method of Test Statics Lumber in Structural Sizes, Section 36-43.” West Conshohocken, PA.
5. ASTM. (2003). “Volume 04:10: D 198-02 Standard Test Method of Test Statics Lumber in Structural Sizes, Section 4-11.” West Conshohocken, PA.