Knell. The Great Fossil Enigma. Indiana University Press.
芝加哥风格引文Knell. The Great Fossil Enigma. Indiana University Press.
MLA引文Knell. The Great Fossil Enigma. Indiana University Press.
警告：这些引文格式不一定是100％准确.
APA引文
Knell. The Great Fossil Enigma. Indiana University Press.
芝加哥风格引文Knell. The Great Fossil Enigma. Indiana University Press.
MLA引文Knell. The Great Fossil Enigma. Indiana University Press.