Rugh, R. (1951). The Frog: Its reproduction and development. McGraw-Hill Book Co., Inc.
芝加哥风格引文Rugh, Roberts. The Frog: Its Reproduction and Development. New Delhi: McGraw-Hill Book Co., Inc, 1951.
MLA引文Rugh, Roberts. The Frog: Its Reproduction and Development. McGraw-Hill Book Co., Inc, 1951.
警告：这些引文格式不一定是100％准确.