Format: 

Lastname, Firstname. "Title of Article." Title of Newspaper [City of Publication], edition, Day Month Year, Page(s). Database Name or Title of Non-Publisher Website, URL. Accessed Day Month Year.

Lastname, Firstname. "Title of Article." Title of Newspaper [City of Publication], edition, Day Month Year, Page(s), URL or DOI (when accessed from the publisher's website).

Lastname, Firstname. "Title of Article." Title of Newspaper [City of Publication], edition, Day Month Year, Page(s).

Examples: 

Goodman, James and Steve Orr. "RIT Puts a Twist on Sustainability." Rochester Democrat and Chronicle, 16 Jan. 2011. ProQuest, search.proquest.com.ezproxy.rit.edu/docview/840310833?accountid=108.

In-text: (Goodman and Orr)

Dunsmore, Jesse. "Bailout Ends Rough Week." Times Herald [Port Huron], 5 Oct. 2008, p. A1. ProQuest, search.proquest.com.ezproxy.rit.edu/docview/441700042?accountid=108.

In-text: (Dunsmore A1)

Notes: 

If you are accessing a newspaper article directly from the publisher's website, provide the URL immediately after the page numbers for the article preceded by a comma. If the article is published only online without page numbers, use the URL in place of the page numbers, but omit the http:// or https:// (MLA 110). For instances where the article is not published on consecutive pages, include only the first page number immediately followed by a plus sign (e.g. A2+) (MLA 110). If the city is not included in the publication's title, include the city of publication in square brackets immediately following the title (see second example) (MLA 111). If the newspaper publishes multiple editions (e.g. late edition), include the edition after the title of the newspaper – edition may be abbreviated (e.g. late ed.) (MLA 39; https://style.mla.org/newspaper-editions).

Source:
MLA - p. 30