Pro Football Journal: Justin Smith—Recently Retired Already Forgotten?
49ers Defensive Star, Team Leader Justin Smith Retires From NFL - CBS San Francisco
49ers' Justin Smith calls it quits after stellar 14-year career
10 Key Moments in Justin Smith's Football Career
Justin Smith – Missouri Sports Hall of Fame
Justin Smith retires: 49ers defensive lineman announces retirement - Sports Illustrated
Justin Smith Announces Retirement from NFL
NFL Week 4 Primer: Cincinnati Bengals at Pittsburgh Steelers 2019 - Cincy Jungle