If you know the title or author it may be easiest to enter this information into the Library catalogue. See the Books guide for more details.
If you do use the general Summon search you can still limit your results to make it easier to find a specific item. For example, if you are looking for a physical item, such as a book, map, musical score, cd/dvd etc you can limit your results to "items in the Library catalogue." This will eliminate most electronic resources.