Philosophy books in the library are found in these call number ranges:
First you will need to find three definitions of philosophy, two from philosophical books (but not textbooks), and one from a philosophical reference book. You will need all three of the definitions (you can condense and paraphrase them), citations for each, and the sources for them.
To find academic books containing a definition of Philosophy, try searching the library book catalog below. Two effective searches are introductions and philosophy or philosophy and history . Many of the titles in the results list will provide definitions and an overview in the introduction or first chapter of the book.
Wisdom of the West by 
Columbia History of Western Philosophy
Postmodern Philosophy and the Scientific Turn
Philosophy for Non-Philosophers by 
