Answer
Works Cited
Thomas, Angie [@angiethomas]. Photo of The Hate U Give cover. Instagram, 4 Dec. 2018, www.instagram.com/p/Bq_PaXKgqPw/.
Parenthetical citation: (Thomas)
Narrative citation: Thomas posts on Instagram to share the story of meeting a young fan.
Visit MLA Handbook Plus for more guidance (delaGATE login required).