Grewal, J. S. (2017). In the 20th Century. Brill's encyclopedia of Sikhism online. doi:10.1163/2589-2118_BESO_COM_031665
芝加哥风格引文Grewal, J. S. "In the 20th Century." Brill's Encyclopedia of Sikhism Online 2017, https://doi.org/10.1163/2589-2118_BESO_COM_031665.
MLA引文Grewal, J. S. "In the 20th Century." Brill's Encyclopedia of Sikhism Online, 2017, https://doi.org/10.1163/2589-2118_BESO_COM_031665.
警告：这些引文格式不一定是100％准确.