CREATE TABLE table_20617 ("#" FLOAT, "Series Sorted" CLOB, "Title" CLOB, "Author" CLOB, "Doctor" CLOB, "Featuring" CLOB, "Released" CLOB)

Name the author for peri and april 2010
SELECT "Author" FROM table_20617 WHERE "Featuring" = 'Peri' AND "Released" = 'April 2010'
SELECT "Author" FROM "table_20617" WHERE "Featuring" = 'Peri' AND "Released" = 'April 2010'