ar %D9%82%D8%A7%D9%84%D8%A8:%D8%A3%D8%B3%D9%85%D8%A7%D8%A1 %D9%85%D9%85%D8%A7%D8%AB%D9%84%D8%A9 %D9%88%D9%8A%D9%83%D9%8A%D8%A8%D9%8A%D8%AF%D9%8A%D8%A7:Manual of Style Self-references to avoid