CREATE TABLE table_13037 ("Block" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Code" TEXT)

Which Written by has a Code of 1.2 1.3?
SELECT "Written by" FROM table_13037 WHERE "Code" = '1.2 1.3'
SELECT "Written by" FROM "table_13037" WHERE "Code" = '1.2 1.3'