请问SCI,引用他人数据图表，需要向作者要第三方著作权表格吗

　　请问SCI,引用他人数据图表，需要向作者要第三方著作权表格吗。这样回复： Ask the original author whether any third-party copyright might apply, to whom in such a case you would have to ask permission to reproduce the work.
结合以上，我应该发邮件问原作者要什么呢？不太懂，是要开一个第三方著作权的证明嘛？感谢(??ω`?)