XPath for link in an html page by using the label of the link

I have a link that can not be identified in my html page shown below:

<a href="/somthing/confirm_delete_somthing?&id=12">Delete this monitor</a>

What is the XPath to identify the link by the label Delete this monitor?

something like //a[@label="Delete this monitor"]?

Replace @label with text() which represents a text value of a node.

//a[text()="Delete this monitor"]

For cases where the text is on another line, such as

<a>
   Delete this monitor
</a>

you can use normalize-space() function which removes starting and trailing spaces:

//a[normalize-space(text())="Delete this monitor"]

Use:

//a[. = "Delete this monitor"]

or

//a[normalize-space() ="Delete this monitor"]

This will select the node even when it is something like the following:

<a href="/somthing/confirm_delete_somthing?&id=12">Delete <strong>this</strong> monitor</a>

In contrast, the expression from currently accepted answer does not select such a node.