Kincaid, Jamaica. "Girl." The Vintage Book of Contemporary American Short Stories, edited by Tobias Wolff, Vintage, 1994, pp. 306-07.
In some cases, there may also be a SECOND container--a container might be within a larger container. You might have retrieved an article from a journal using a library database. Here, ProQuest is the second container that holds Historical Journal, which is the first container for the article called "Love and Courtship..."
Langhamer, Claire. “Love and Courtship in Mid-Twentieth-Century England.” Historical Journal, vol. 50, no. 1, 2007, pp. 173-96. ProQuest, doi:10.1017/S0018246X06005966.
You might have watched a television series on Netflix. Here, Netflix is the second container that holds the show Parks and Recreation, which contains the episode called "94 Meetings."
“94 Meetings.” Parks and Recreation, season 2, episode 21, NBC, 29 Apr. 2010. Netflix, www.netflix.com/watch/70152031?trackId=200256157&tctx=0%2C20%2C0974d361-27cd-44de-9c2a-2d9d868b9f64-12120962.
A Web Site can also be a container and contains articles, postings, and other works.
Zinkievich, Craig. Interview by Gareth Von Kallenbach. Skewed & Reviewed, 27 Apr. 2009, www.arcgames.com/en/games/star-trek-online/news/detail/1056940-skewed-%2526-reviewed-interviews-craig.