Jerome scored the opening goal in Blues' 2-0 win in their first ever visit to the Keepmoat Stadium on Saturday evening.
"It's a massive win for us and a good three points" the Blues striker told Sky Sports after the game.
"We've had two potentially difficult away games against Barnsley on Tuesday and then another today against Doncaster, who are a very good team.
"We came here with a great attitude and we've set our stall out right from the start.
"We've worked hard and I think we fully deserved the victory.