PHOTOS: Don Shula, former Miami Dolphins head coach and winningest coach in NFL history, dies at 90
Jim Langer - South Dakota Sports Hall of Fame
Bob Kuechenberg, former Pro Bowler and member of undefeated 1972 Dolphins, dies at 71 - Los Angeles Times
Jim Langer: NFL Hall of Famer, South Dakota State graduate dies at age 71
Top 10 Miami Dolphins Players of All Time - Sports Illustrated
Dolphins great Jim Langer dies at 71
Football's toll: At least seven members of 1972 Dolphins affected by cognitive impairment
JACKS, BEARS SET FOR TOP-FIVE CLASH - South Dakota State University Athletics
Valley News - Kuechenberg, an Undefeated Dolphin, Dies
Jim Langer: Miami Dolphins Hall of Famer dies aged 71 - BBC Sport
NFL: The Miami Dolphins team of 'misfits' who won the Super Bowl undefeated - BBC Sport