When referencing a Newsela article in MLA format, use the following format:
Original Author's Last Name, First Name, and Additional Author. "Title of Article." Title of Newspaper via Newsela. Edited by Newsela Staff, Version Lexile, Date published, . Date of access (if applicable).
Example:
Beaumont, Thomas, and Julie Pace. “VP Debate: Kaine and Pence fight for their running mates.” Associated Press via Newsela. Edited by Newsela Staff, Version 1190, 5 Oct. 2016, https://newsela.com/articles/pence-kaine-vpdebate/id/22542/.