Some older editions of these study guides and other books on International Law are located on level 3, south stacks, under call numbers ranging from KZ 1200 to KZ 3400.
The Elgar Advanced Introduction Series focuses on international topics ranging from human rights to intellectual property. These books are available in the Law Library stacks (as opposed to on reserve like the rest of the books in this guide). This means these books can be checked out for longer periods of time. They may also be a nice transition from the introductory text to more advanced discussions on these topics.