Stewart, Lauren. "Best practices and specifications for massive concrete drilled shafts." University of Georgia. Map and Government Information Library. 2022-02, https://dlg.galileo.usg.edu/do:dlg_ggpd_s-ga-bt700-pr4-bm1-b2022-bc66-belec-p-btext.

Stewart, Lauren (2022-02). Best practices and specifications for massive concrete drilled shafts. Retrieved from https://dlg.galileo.usg.edu/do:dlg_ggpd_s-ga-bt700-pr4-bm1-b2022-bc66-belec-p-btext

Stewart, Lauren. "Best practices and specifications for massive concrete drilled shafts." 2022-02. July 30, 2025. https://dlg.galileo.usg.edu/do:dlg_ggpd_s-ga-bt700-pr4-bm1-b2022-bc66-belec-p-btext.