Answered By: Rebecca Mackle
Last Updated: Mar 29, 2016     Views: 22

The source you are referencing would fall under the category 'Using electronic resources' subheading 'Publications available from websites' from our guide to Harvard referencing guide:

At the bottom of the guide there is a section about how to deal with 'References with missing details' which will give you advice on what to do when the date is missing.