What is a tool that includes structured sets of questions on specified subjects that are used to gather information, attitudes, or opinions?

What kind of source is an immediate, first-hand account of a topic, from people who had a direct connection with it?

What is the factual information [as measurements or statistics] used as a basis for reasoning, discussion, or calculation?

What kind of source is one step removed from primary sources which can cover the same topic, but add a layer of interpretation and analysis?

What is a list of all of the sources you have used (whether referenced or not) in the process of researching your work?