Add the template to the "external links" section of the article to create a link to the Worldcat page associated with the article's title.
To use this template, first do a worldcat identities lookup. Enter the person's name (e.g, Samuel Phillips.) This will often lead to a list of possible matches. Select the correct link (e.g., "Phillips, Samuel 1752-1802") and click on it. This will lead to the correct page on worldcat. The id is the string after the last slash in the URL, e.g., lccn-n85-221132. Now, fill in your template as follows: