Bullough, G. (1949). <<The>> trend of modern poetry (3. ed.). Oliver & Boyd.
芝加哥风格引文Bullough, Geoffrey. <<The>> Trend of Modern Poetry. 3. ed. London: Oliver & Boyd, 1949.
MLA引文Bullough, Geoffrey. <<The>> Trend of Modern Poetry. 3. ed. Oliver & Boyd, 1949.
警告：这些引文格式不一定是100％准确.