In-Text:
(Rowling)
Works Cited:
@jk_rowling (J.K. Rowling). "God, I hate this stuff. I've winged it my whole life. I've messed up regularly. There are no rules. Do your own thing." Twitter, 12 June 2016, 10:03 a.m., twitter.com/jk_rowling/status/742039536688107520.
NOTE: If the author's name begins with "@", disregard it when alphabetizing your Works Cited list. Instead, begin with the character immediately following it.