United have won 13 Premier League titles under Ferguson, who has now collected 49 club trophies in his long managerial career, and the 92 points they amassed in 1993-94 remains a club record, albeit over 42 games rather than the current 38.
A superb pass from deep by Rooney from the halfway line set up Van Persie for an exquisite left-foot volley from just outside the box that flew into the net in the 13th minute.
United have so far notched 78 league goals, compared to City's 59, with almost a third (24) coming from Van Persie. With 35 conceded, they have let in five more than City but the goals for easily compensate.
Fans have been celebrating after Manchester United won the Premier League by beating Aston Villa 3-0 at Old Trafford.
In front of an Old Trafford crowd in celebratory mood, United got off to a dream start with less than three minutes on the clock with van Persie opening the scoring. (Getty Images)
Manchester United won their 20th league title on Monday when a Robin van Persie hat-trick led them to 3-0 victory over Aston Villa and gave them an unassailable 16-point lead over last season's Premier League champions Manchester City. (Getty images)
His third, on 33 minutes, again involved Giggs who was fed by Shinji Kagawa before finding Van Persie in the box. The Dutchman had time to shift the ball on to his left foot before sending it in off the post for his 24th league goal of the season.
After beating Aston Villa 3-0 on Monday to seal a record extending 20th English title, the next target is to reach 96 points, one more than the Premier League points record set by Jose Mourinho's ruthlessly efficient Chelsea side in 2004-05.