Is this all I have to do for MLA style citation?

Please forgive me for saying this but your professor is almost urredly going to negate your source. Wikipedia has the dubious reputation of being alterable by anyone who wants to change information. That means it is unreliable and unacceptable. It would be advisable to see if you can find from where Wikipedia is quoting and use that instead. I am also not sure I would agree with their "crossing the color lines" quote or that African American Literature was "absorbed in mainstream culture". Much of the literature dealt with such controvercial topics that whites appalled at what they believed to be horrible lies: Ping, racism, Jim Crow, lynching, interracial love). See if you can get a paperback book called "The Harlem Rennaissance" by Amrijit Singh. He is an expert in this area. Or, you can see if you can obtain a copy through your university library. It's a quick read and very informative. Sorry, I also don't think your paraphrase is totally accurate, try again. I hope you haven't waited too long to write your paper. This is such a wonderful era in history. Get an A. I expect nothing less.