1. Before searching for specific journal articles, it's a good idea to consult one of these for an overview on your topic.
statistical source
list of associations
subject-based encyclopedia

2. For numerical data to support your position or claim, the best first source to use would be a:
dictionary
statistical source
subject-based encyclopedia

3. For a listing of people, use a:
directory
handbook
abstract

4. All the best information is now available online
true
false