Getting MLA multiple-author citation right is like proof you read the manual. It shows you care about details, even when no one is watching. Teachers, bosses, and even that friend who always checks citations will silently nod in approval.
Plus, it makes your work look professional. Imagine sending a report to your boss and they see you correctly handled a study by five economists. You’ll look like the person who actually understands how to give credit where it’s due.