No, there are no hard and fast rules about sources, no printed booklet to help journalists through.

No, there are no hard and fast rules about sources, no printed booklet to help journalists through.

不，没有关于消息来源的硬性规定，也没有帮助记者了解情况的印刷小册子。

-- Ian Hislop 伊恩·希斯洛普