For up-to-date guidance, see the ninth edition of the MLA Handbook. A simple principle applies for what seems like a thorny issue: Nest punctuation that appears within punctuation by alternating punctuation marks to disambiguate—in this case, between double and single quotation marks. The most common reason for nesting punctuation is shown in section 1. If the quotation enclosed in single marks also contains material—whether another quotation or the title of a work—that needs to be set off with quotation marks, use double quotation marks around that material. The pattern is double, single, double quotation marks.
Block quoting in MLA style
How do I punctuate a quotation within a quotation within a quotation? | MLA Style Center
Quotations also known as quotes are the exact words that are taken directly from a text and repeated by someone other than the original author. When you use the exact words and sentence structure as your source, you are quoting that source. When using quotes in your writing, you need to copy the words exactly as they appear in the source. Quotes should be used sparingly because the majority of the text should be your own ideas.
The MLA Style Center
A typical quotation is enclosed in double quotation marks and is part of a sentence within a paragraph of your paper. However, if you want to quote more than four lines of prose or three lines of verse from a source, you should format the excerpt as a block quotation, rather than as a regular quotation within the text of a paragraph. Most of the standard rules for quotations still apply, with the following exceptions: a block quotation will begin on its own line, it will not be enclosed in quotation marks, and its in-text citation will come after the ending punctuation, not before it.
Published on April 25, by Courtney Gahan. Revised on December 16, A block quote is a long quotation , set on a new line and indented to create a separate block of text. No quotation marks are used. You have to use a block quote when quoting more than around 40 words from a source.