A CNN article written about a secretly recorded videotape of Romney speaking to a crowd of supporters utilizes a number of attribution techniques.
The article cites quotes from television interviews, polls, and written articles.
The wide variety of sources from which the article draws its information provides depth and insight for readers. Readers understand what happened, what the candidates said about it, and how the situation may affect the presidential race.
The article attributes its information throughout the story using both direct quotes and paraphrased comments. It also provides links to some of its sources.