CREATE TABLE table_25800134_13 (writer_s_ VARCHAR, airdate VARCHAR)

Who was the writer of the episode that originally aired on October 14, 1968?
SELECT writer_s_ FROM table_25800134_13 WHERE airdate = "October 14, 1968"
SELECT "writer_s_" FROM "table_25800134_13" WHERE "October 14, 1968" = "airdate"