@book{ BN06988102, author = "章, 伯鋒 and 李, 宗一 and 中国史学会 and 中国社会科学院近代史研究所", title = "北洋军阀 : 1912-1928", publisher = "武汉出版社", year = "1990", URL = "https://ci.nii.ac.jp/ncid/BN06988102" }