Because of the complexity of legal citations, MLA follows a legal citation style guide for citing sources such as legislation and case law. Legal citations in your Works Cited list will look significantly different from other material that you may cite.
The MLA Style Center has articles with helpful guidance on this topic. See:
Sometimes an author of a book, article or website will mention another person’s work by using a quotation or paraphrased idea from that source. (This may be called a secondary source.) For example, the Kirkey article you are reading includes a quotation by Smith that you would like to include in your essay.
The basic rule is that in both your Works Cited list and in-text citation you will still cite Kirkey. Kirkey will appear in your Works Cited list – NOT Smith.
You will add the words “qtd. in” to your in-text citation.
Examples of in-text citations:
Smith (qtd. in Kirkey) states that “even if euthanasia was legal, 42% of doctors would be against this method of assisted dying” (A.10).
Example of Works Cited list citation: