In MLA style, in-text citations are formatted in the following ways:
- inside the closing period (the citation goes before the final punctuation of the sentence).
- in parentheses (the citation is enclosed in parentheses).
- at the end of a sentence (the citation typically appears at the end of the sentence where the referenced information is used).
So, the correct answers are:
- inside the closing period
- in parentheses
- at the end of a sentence