Citation in the Archive Structure Viewer is the same as it is in your web browser. You may cite the location of individual resources or of corpus or session nodes. When you need to cite a point in the corpus, you choose citation from the menuoptions in the content panel Citation
Use the link which is first being displayed in the simple view in order to cite. Click on the link and you should be redirected accordingly. You can also copy and paste the link if you need to use or save it in other applications. If you need different kinds of information, e.g. the internal node ID choose the "show details" option and more information will be displayed.