Erdmann, K., Hannabuss, K., & Parker, A. (2013). Bounding and unbounding higher extensions for SL2.
芝加哥风格引文Erdmann, K., K. Hannabuss, 与 A. Parker. Bounding and Unbounding Higher Extensions for SL2. 2013.
MLA引文Erdmann, K., et al. Bounding and Unbounding Higher Extensions for SL2. 2013.
警告：这些引文格式不一定是100％准确.