1972 Dolphins ranked as second-best team of Super Bowl era by CBS
Shula, winningest coach in pro football history, dies at 90
Undefeated: Inside the 1972 Miami Dolphins' Perfect Season by Mike Freeman, Paperback
NFL teams that started 10-0 since '66 - Sports Illustrated
1972 Miami Dolphins: The inside story of the only perfect season in NFL history
Larry Csonka on the '72 Dolphins and NFL perfection: 'I guard it jealously'
Seventeen and Oh: Miami, 1972, and the NFL's Only Perfect Season (Audible Audio Edition): Marshall Jon Fisher, Tom Campbell, Tantor Audio: Books
Do you consider the undefeated Miami Dolphins team the greatest team ever? - Quora
1972 Miami Dolphins: The inside story of the only perfect season in NFL history