On site : the largest part of the collection may be borrowed (there are some restrictions on law books) ; users who are registered in the RBNJ network may ask for the delivery of books through the search interface EXPLORE
In Switzerland : CIES is a private institution, however part of the Library Network of Western Switzerland (RERO). Inter-Library Loans in Switzerland are possible using ILL-RERO.
International : Libraries outside Switzerland may request photocopies of articles and extracts of books via E-mail. Payment is due with IFLA Vouchers