Bradford launched a brave fightback in the closing stages, but Knill was delighted with his side's determined display.
"That was a tough game," Knill admitted. "Bradford threw everything at us and we had a bit of luck, but if you battle and work as hard as possible you earn your luck.
"This is our fifth win away from home and credit goes to the players. They go into every game with no real fear. The squad is looking strong in all positions and we have got players who are experienced.
"All my players are back, fit and hungry and they want to do something this year. There is a real confidence and focus about them. The win over Rochdale in midweek was huge and added belief to the squad."