I would like to kindly ask you if you could provide more detailed information regarding this problem - you cannot find the link or you cannot perform the revert to previous version action?
By design authors can view / revert history of their own content, but cannot revert others content (can view others revision history though).
In order to guide you further, please elaborate your requirement and also tell us which Sitefinity version you are using.
Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Public Issue Tracking
system and vote to affect the priority of the items