Certain categories of books are for use only within the library and may not be borrowed. These include:
- Reference Books: for e.g. dictionaries, encyclopaedias, and certain large or rare books.
- Course Reference Books: these are set aside at the request of the lecturers, or have been designated as recommended or required reading for a particular course and placed on the Course Reference Rack for the duration of the course (normally one term) for the sake of ease of access to the entire class.
- Periodicals: journals, magazines, and newspapers.
- Archival Materials: books marked with a letter A in red are very old, rare, fragile, or of historical importance, and are kept in a separate cupboard which is generally locked, but which can be opened at the discretion of the librarian on duty.