Question

How do you find sources for a topic?

Answer 1

Please be more specific by what you mean by "topics" and sources. Update your question and we'll try to answer.

Answer 2

sources- where you get your information from
websites, books, journals, etc

Answer 3

really depends on the level of research you need to do.

this is decent though: http://scholar.google.ca/schhp?hl=en