Author. "Title of Webpage." Name of Website, Name of Publishing Organization (if different than name of website), date, URL.
See specific examples below.
Inskeep, Steve. "In Iran, A Poet's 700-Year-Old Verses Still Set Hearts Aflame." NPR, 12 Feb. 2016, www.npr.org/sections/parallels/2016/02/12/466408554/in-iran-a-poets-700-year-old-verses-still-set-hearts-aflame.
"Paul Laurence Dunbar." Poetry Foundation, 2016, www.poetryfoundation.org/poems-and-poets/poets/detail/paul-laurence-dunbar.
Because there is no individual author, the citation will start with the title of the webpage.