Kingsley, Gordon. "Strategies for communicating quality expectations for environmental service contracts." University of Georgia. Map and Government Information Library. 2020-02, https://dlg.galileo.usg.edu/do:dlg_ggpd_s-ga-bt700-pr4-bm1-b2020-be5-belec-p-btext.

Kingsley, Gordon (2020-02). Strategies for communicating quality expectations for environmental service contracts. Retrieved from https://dlg.galileo.usg.edu/do:dlg_ggpd_s-ga-bt700-pr4-bm1-b2020-be5-belec-p-btext

Kingsley, Gordon. "Strategies for communicating quality expectations for environmental service contracts." 2020-02. July 23, 2025. https://dlg.galileo.usg.edu/do:dlg_ggpd_s-ga-bt700-pr4-bm1-b2020-be5-belec-p-btext.