"Comparing 5b44992...1cac893". adobe-fonts/source-sans. Adobe Inc. 21 January 2021 – via GitHub. https://github.com/adobe-fonts/source-sans/compare/5b44992...1cac893
Paul, Ryan (3 August 2012). "Adobe releases Source Sans Pro, a new open source font". Ars Technica. Retrieved 6 November 2016. https://arstechnica.com/information-technology/2012/08/adobe-releases-source-sans-pro-a-new-open-source-font/
Hunt, Paul D. (2 August 2012). "Source Sans Pro: Adobe's first open source type family". Adobe Typekit Blog. Adobe Systems Incorporated. Retrieved 28 June 2014. http://blog.typekit.com/2012/08/02/source-sans-pro/
Gilbertson, Scott (3 August 2012). "Source Sans Pro: Adobe's First Open Source Type Family". Webmonkey. Wired. Retrieved 28 June 2014. http://www.webmonkey.com/2012/08/adobe-dives-into-the-open-source-font-world-with-source-sans-pro/
Rugen, Chris. "Source Sans review". Typographica. Retrieved 11 July 2015. http://typographica.org/typeface-reviews/source-sans/
"Variable Fonts — Source Sans Variable". https://v-fonts.com/fonts/source-sans-variable
Hunt, Paul D. (2 August 2012). "Source Sans Pro: Adobe's first open source type family". Adobe Typekit Blog. Adobe Systems Incorporated. Retrieved 28 June 2014. http://blog.typekit.com/2012/08/02/source-sans-pro/
"Source Sans Pro: Adobe's first open source type family". TypeKit. Retrieved 30 September 2014. http://blog.typekit.com/2012/08/02/source-sans-pro/
Brown, Tim. "Selecting Typefaces for Body Text". Typekit Practice. Adobe Systems. Retrieved 28 July 2018. Source Sans has an obviousness and toughness similar to News Gothic, but with a much more even color. Its letterforms are wider and more widely spaced, more modest than monumental, which makes sense in a body text setting....News Gothic is not a good choice of body text typeface. Certain letter combinations are very dense, and the overall color is not even. https://practice.typekit.com/lesson/selecting-typefaces-for-body-text/