Print reference resources are located on the 4th floor of Gould Library.  These are particularly helpful at certain stages of your research:

At the beginning of your research:

1. get an overview of a topic and
2. identify synonyms or related terms that will apply to your topic.

Later, return to reference sources:

1. to clarify concepts,
2. define new vocabulary,
3. locate bibliographical references to get ideas for additional sources, and
4. understand methodology.

This list is just a starting point.  There are many more excellent books in both the reference and general collections.  Use nearby call numbers or the linked subject headings in Catalyst to find similar books to the initial ones you find useful.