From finding the right place for the latest addition to verifying facts in reference books , there is always much to do . 从为一件新添的收藏品找合适的放置地方，直到在参考书中验证资料，总有事可做。
It is reasonable to suppose that it contained many of the sources he used in his own writings, and they alone would make up a sizable collection . 据合理估计，藏书中一定有许多供他本人写作时用的参考书，而且占了相当大的比例。
You can view the reference book online for free 你可以免费线上浏览这本参考书。
All the reference books available are out of date 所有找到的参考书都是过时的。
This reference book is very useful to our study 这本参考书对我们的研究很有用。
Reference books must not be removed from the reading room 参考书不能带出阅览室
The teacher has made out a list of reference books 教师已开出了一份参考书单。
These references include guidelines such as these 这些参考书目包含大致如下指南：
Such references should usually be provided in footnotes 参考书目常于脚注中标注。
Do you buy the study guides that go with the books 你买不买与教科书配套的参考书
