I do pretty much what Black Shadow does and cue the bark. My guys know "enough" and "thank you."
This is pretty much the method I use. It says in the house, and that worked well for my guys because we live on a street with heavy foot traffic. She doesn't say when to add the cue for quiet, but I capture the behavior first and then when it's being offered I add the cue. So first focus on teaching him "bark" and then on your cue for him to stop. It works well for us.
"When something happens that sets him off, In the house, get some super treats and the minute he barks click him and treat. Put him on a leash if you have to, so he doesn't run around. Stand on the leash. As he is eating the treat and can't bark, shove your hand in his face like a traffic cop giving a 'Stop' signal; this will suprise him a little. Click and treat. Then pause, don't move, let him start barking, click, treat, signal Stop, while he's still quiet, click and treat. Then say "Bark!" let him start barking, click and treat, signal stop, click and treat. Go back and forth at least twenty times, very fast, don't try to keep him silent, just Get silence and click it. He will catch on.
You will now have the beginnings of both a bark cue, to reward a single woof, and a Silence cue, to interrupt barking, indoors. Do this exercise every time he gets to barking in the house." -
https://www.clickertraining.com/node/237