The University of St Andrews has a CLA HE Licence.
Under the terms of this licence, the proportion of a work that can be copied consists of whichever is the greater of 10% of the total work or:

• One chapter of a book.
• One article of a journal issue.
• One paper of one set of conference proceedings.
• One report of a single case from a report of judicial proceedings.
• One scene from a play.
• One short story or one poem or one play of not more than 10 pages in an anthology of short stories, poems or plays.

All printed books, journals and magazines published in the UK are automatically included in the CLA Licence, unless the rightsholder has expressly requested otherwise.  You can check whether an item is covered by the Licence by using the CLA's Check Permissions Tool.