In the Abstract article in the second paragraph there is a source from (Young, 2006, p. 12)
He uses this to strengthen his statement with a fact.

In the last paragraph on page 2 of the RadioHead article the author uses a sources (gtd in Peschek 5)
He uses this source to write about the emphasis of production and have an actual statement backing it up.

In the last paragraph on page 3 in the RadioHead album the writer uses a source (351)
The writer uses this source to back up the economic view of the paper.