The answer to your question is Prose.
The first 10<span> amendments to the Constitution make up the </span>Bill of Rights<span>. Written by James Madison in response to calls from several states for greater constitutional protection for individual liberties, the </span>Bill of Rights<span> lists specific prohibitions on governmental power.</span>
This type of source would be
"books of more than one volume"
It appears to be a 4-volume series regarding Southern Rock Opera. We cannot infer that its an anthology, which is a number of collected works within the same genre (such as a 70's rock greatest hits collection), and there are more than one author listed. We also do not know which edition it is.