I gave away an internet book to my non-profit landlord's free lending library

I was submitting our lease for another year and realised I had taken a couple of books from the lending library and owed them a book. Since I had finished reading Alberts, David S. & Papp, Daniel S. Information Age Anthology Vol 1 : The Information and Communication Revolution (Washington, DC: The Centre for Advanced Concepts and Technologies, 1997) yesterday I left it at the lending library for someone else to read..