The Bantams notched their fourth victory in an unbeaten run of five matches, which has hauled them up into seventh place in npower League Two.
City are running into form at just the right time, and Parkinson said: "We started really well and got them on the back foot from the first whistle.
"That's something we spoke about before the game. We looked as if we could score every time we got the ball, which is a great sign.
"You feel there are goals in the team and the lads are playing full of confidence.
"It is all about momentum, but we need to keep the lads' feet on the floor. There is a lot of work to do and it's our job to give them enough time to recover so they can produce more performances like this.
"We haven't really mentioned the play-offs. We've got to concentrate on performing well in each game.
"At the moment we're feeling confident and that bodes well for the remaining games of the season."
Parkinson had special praise for leading scorer Nahki Wells, whose two goals took his tally to 21 for the season.
"Nahki is full of confidence again," Parkinson added. "He has had a good break and is fresh again. He's full of confidence in everything he does, inside and outside the box."