Glass, Don (October 16, 2008). "The Color of Lint". A Moment of Science. Indiana Public Media. Retrieved 26 March 2013.
Zollinger, Sue Anne (23 March 2011). "What Is Bellybutton Lint?". Indiana Public Media. Archived from the original on 13 November 2019. Retrieved 30 November 2020.
Zollinger, Sue Anne (23 March 2011). "What Is Bellybutton Lint?". Indiana Public Media. Archived from the original on 13 November 2019. Retrieved 30 November 2020.