Which citation is correctly formatted using MLA guidelines for a magazine article?

Ryan O’Neil: “Strategies for Young Investors,” Finance Weekly: August 1, 2009: 33-35. Print.
Ryan O’Neil. “Strategies for Young Investors.” Finance Weekly 1 August 2009: 33-35.
O’Neil, Ryan. “Strategies for Young Investors.” Finance Weekly 1 August 2009: 33-35. Print.
O’Neil, Ryan: “Strategies for Young Investors.” Finance Weekly August 1, 2009: 33-35.