Punctuating a question containing a quotation that itself contains a question, in MLA format
Solution 1:
MLA's style guide answers this directly:
Do not use two question marks. Use only the question mark contained in the quotation:
Which Shakespeare character asked, “Is this a dagger which I see before me, The handle toward my hand?”But if the sentence includes a parenthetical citation, place the question mark after the citation:
How would you respond to the writer’s question, “How important is punctuation” (5)?