"Bog Turtle – Fact Sheet"(PDF). North Carolina Wildlife Resource Commission. 2006. Archived from the original(PDF) on 2011-06-04. Retrieved 2009-09-19.
Shiels 2007, p. 24. Shiels, Andrew L. (2007). "Bog Turtles Slipping Away"(PDF). Pennsylvania Angler & Boater. Pennsylvania Fish and Boat Commission. pp. 23–26. Archived from the original(PDF) on 2011-09-28. Retrieved 2010-05-29.
Shiels 2007, p. 24. Shiels, Andrew L. (2007). "Bog Turtles Slipping Away"(PDF). Pennsylvania Angler & Boater. Pennsylvania Fish and Boat Commission. pp. 23–26. Archived from the original(PDF) on 2011-09-28. Retrieved 2010-05-29.
"Bog Turtle – Fact Sheet"(PDF). North Carolina Wildlife Resource Commission. 2006. Archived from the original(PDF) on 2011-06-04. Retrieved 2009-09-19.