The story, by the Minnesota Daily, about the new "app building" class used attribution very effectively.
The basis of the story is about how graduate students at the University of Minnesota can take a course on how build and use educational applications for mobile devices.
The story used the person who is going to teach the course, Assistant Professor Charles Miller, as the first reference and the main reference, which made the story credible.
The story also brought in the opinions of graduate students about what they thought of the new course, which made the story well-rounded. It is always good to include input from both sides of a subject, when possible, to give a reader a good understanding of what's going on.
The story also didn't make the use of attributions confusing. A reader could tell who was speaking and what they were speaking about.