Dewantoro, Dwi Angga and Dra. Mas’ulah, MA and Ari Setyorini, S.S, MA (2014) SELF DEFENSE MECHANISM IN ROBERT FROST’S “FIRE AND ICE, STOPPING BY WOODS ON A SNOWY EVENING AND THE ROAD NOT TAKEN” POEM. Other thesis, Universitas Muhammadiyah Surabaya.