Ideally, different kinds of reading inform each other, and act as useful reference points for and counterbalances to one another.

理想情况下，不同类型的阅读可以相互提供信息，并作为有用的参考点，相互平衡。

youdao

It has many omissions; even so, it is quite a useful reference book.

那本书有许多遗漏之处，即使如此，尚不失为一本有用的参考书。

《新英汉大辞典》

It is a useful reference to the construction business.

对施工企业具有借鉴和参考价值。

youdao

This is a useful reference guide to life insurance and annuities.

FORBES: Nine Great Investment Books Worth Reading

In this regard, the agreed objectives of the Convention of Biological Diversity are a particularly useful reference for what business should be doing about biodiversity.

FORBES: Biodiversity: What Are We Supposed To Do About It?

While not an exact scientific measure, a sampling of U.S. doctrinal writings on IW could provide a useful frame of reference and possibly some context for comparison between Chinese and American thinking.

CENTERFORSECURITYPOLICY: What is IW?