Scenario: You read an article by Robbins that cites, on page 270, another article by Wills. You want to cite Will's article, but you have not read Wills's article itself.
Robbins, Michael. "Paul Muldoon's Covert Operations." Modern Philology, vol. 109, no. 2, 2011, pp. 266-99. JSTOR, doi:10.1086/663233.
Your Works Cited list will contain the article you read, by Robbins. Your Works Cited list will NOT contain a citation for Wills's article.