"Read the Fergie interview transcript... on holding grudges, listening to American Civil War tapes on the way to work, handling Man United's millionaires and why he thinks Pele is THE all-time No 1". Interview with Charlie Rose, www.dailymail.co.uk. October 2, 2013.
Kay Robertson, Korie Robertson, Missy Robertson, Jessica Robertson, Lisa Robertson (2014). “The Women of Duck Commander: Surprising Insights from the Women Behind the Beards About What Makes This Family Work”, p.255, Simon and Schuster