Some items in ABIGAIL have a "Place Request" button that does not function. This is because a collection guide is available through which you can place requests. In these instances, the catalog record contains a link (next to the "Electronic Resources" heading) to the collection guide. Follow the link to place your request(s).
Sometimes, an ABIGAIL record does not have a button at all. This happens because of a minor glitch in the system. Try closing the catalog and then returning to try your search again and the problem should correct itself.