Pro Football Journal: A Few Diagrams From Buddy Ryan's Playbook
The Bear Defensive Front - Shakin The Southland
Scouting Ohio State 2013 - B1G Breakdown - California Golden Blogs
The Bear Defensive Front - Shakin The Southland
Madden NFL 12 Walkthrough Primer - GameSpot
Summer School 2020: The Tite Front - what it is and how to beat it - Big Blue View
Buddy Ryan: How Bears coach invented the 46 defense - Sports Illustrated
UW Huskies Film Study: California Golden Bears - UW Dawg Pound