(原始内容存档于2016-06-27). Ollie Carlson. Hard Knocks 365 rebrands to Sanford MMA with sponsorship from Sanford Health. thebodylockmma.com. December 13, 2019 [2022-04-30]
manuscript from 1217. Live Science. [2024-03-21]. (原始内容存档于2024-06-18). Sanford, Roscoe F. High-Dispersion Spectrograms of T Coronae Borealis.. Astrophysical
OregonLive.com. [2019-08-28]. (原始内容存档于2018-11-17). Former SC Gov. Mark Sanford has dropped out of presidential race (页面存档备份,存于互联网档案馆). The Post and Courier