If you have found a relevant book in the catalog, click on the title to see the full record. Then click on relevant subjects or on the author's name to see more works by her/him.
Browse the bibliography or references at the end of a relevant book or article entry in a reference work.
You can also use Google Scholar's "Cited by" link to find out who cited the relevant work. Or click on the author's name for other works by her/him.