Final answer:
When page numbers are missing in an in-text citation, use the paragraph number. The author's last name alone may not be enough for proper citation in MLA style.
Explanation:
If you do not have page numbers in an in-text citation, the appropriate piece of information to use is the paragraph number. This helps readers locate the specific part of the text being referenced. Including the author's last name alone is not sufficient without the page number or paragraph number for proper citation. In MLA style, the in-text citation typically consists of the author's last name and the page number when available.
Learn more about in-text citations in academic writing here:
https://brainly.com/question/50953215
