Georgia. Department of Transportation. Office of Performance-based Management and Research. "Public response to different planting techniques for annual color and enhancement." University of Georgia. Map and Government Information Library. 2020-12, https://dlg.galileo.usg.edu/do:dlg_ggpd_s-ga-bt700-pr4-bm1-b2020-bp8-belec-p-btext.

Georgia. Department of Transportation. Office of Performance-based Management and Research (2020-12). Public response to different planting techniques for annual color and enhancement. Retrieved from https://dlg.galileo.usg.edu/do:dlg_ggpd_s-ga-bt700-pr4-bm1-b2020-bp8-belec-p-btext

Georgia. Department of Transportation. Office of Performance-based Management and Research. "Public response to different planting techniques for annual color and enhancement." 2020-12. August 1, 2025. https://dlg.galileo.usg.edu/do:dlg_ggpd_s-ga-bt700-pr4-bm1-b2020-bp8-belec-p-btext.