"Kentucky Speedway". NASCAR.com. NASCAR Media Group, LLC. January 3, 2013. Diarsipkan dari versi asli tanggal 2017-04-28. Diakses tanggal June 15, 2017.
"Kentucky Speedway". NASCAR.com. NASCAR Media Group, LLC. January 3, 2013. Diarsipkan dari versi asli tanggal 2017-04-28. Diakses tanggal June 15, 2017.