Schulz, P. (2003). Factivity: Its nature and acquisition. Max Niemeyer.
芝加哥风格引文Schulz, Petra. Factivity: Its Nature and Acquisition. Tb̈ingen: Max Niemeyer, 2003.
MLA引文Schulz, Petra. Factivity: Its Nature and Acquisition. Max Niemeyer, 2003.
警告：这些引文格式不一定是100％准确.