《资治通鉴·陈纪·陈纪六》
北周利州刺史纪王宇文康，骄傲没有节制，整修兵器，暗中有造反的阴谋。
周利州刺史纪王康，骄矜无度，缮修戎器，阴有异谋。
The Beizhou Lizhou Inspector Ci Wang Yuwen Kang was arrogant and unrestrained, and he repaired weapons and secretly plotted to rebel.