CREATE TABLE table_29087004_3 (written_by VARCHAR2, united_states_original_airdate VARCHAR2)

Who were the writers of episode/s first aired in the US on June 9, 2012?
SELECT written_by FROM table_29087004_3 WHERE united_states_original_airdate = "June 9, 2012"
SELECT "written_by" FROM "table_29087004_3" WHERE "June 9, 2012" = "united_states_original_airdate"