Darren Moore says Albion's attacking threat was the difference as the Baggies brushed aside a strong Bristol City side.
The visitors were the form side in the Championship winning four games on the bouce. They started off brightly and Albion had Sam Johnstone to thank for a trio of early saves.
But Albion grew into the game and were three goals up after 30 minutes with midfield dynamo Harvey Barnes running the show.
After Jay Rodriguez had scored twice and Dwight Gayle netted, Barnes capped off a fantastic performance with a stunning fourth for Albion.
“I’m really pleased to get another three points," said Moore.
“It makes that point at Birmingham look better in terms of following it up with a home win.
“Lee Johnson’s Bristol City are a very good team and you can see that they have a set DNA.
“It was a game where we have scored four goals, but we probably made it harder for ourselves than it should’ve been.
“We were devastating in our finishing. We were very clinical and we always looked a threat going forward.
“It was another four goals at The Hawthorns and we are delighted with that and long may it continue.
“To score those goals you have to put the hard yards in off the ball to create the opportunities.
“The boys who are scoring the goals will be the first to tell you that it’s a team effort and we are really pleased that we are creating lots of chances.
“It’s a potent attack we have here and we will continue to work with the players and try to improve.”