Borrow a good idea from Davis Library at Middlebury College: create a quiet area. Here’s the blog post to go with the sign:
While certain areas of Davis Family Library have always been known unofficially as good spots for quiet study, recently we’ve formalized that a bit by installing signage marking some areas as “Quiet Study Areas”. Look for the big blue Q and please avoid conversation, either in person or on the phone, anywhere near these signs. Of course, LIS staff won’t be going around the building “shushing” people, but we hope the new signage makes it more obvious which parts of the building are reserved for quiet contemplative study.