What is the proper way to include a link to a web archiving site in a list of references? This is a reference in a list of references presented in Harvard style: 

Beard, M. (2003). Non-terrestrial channels overtake BBC1 and ITV1 in ratings for first time. The Independent. [online] Available at: http://www.independent.co.uk/news/media/non-terrestrial-channels-overtake-bbc1-and-itv1-in-ratings-for-first-time-116550.html [Accessed 18 May 2017].

Here is a perma.cc archival link to that reference: 

https://perma.cc/9TR9-WBRG

What is the proper way to incorporate the archival URL into the citation in the list of references?
You could write 


  Beard, M. (2003). Non-terrestrial channels overtake BBC1 and ITV1 in ratings for first time. The Independent. [online] Available at: http://www.independent.co.uk/news/media/non-terrestrial-channels-overtake-bbc1-and-itv1-in-ratings-for-first-time-116550.html [Accessed 18 May 2017]. (Archived at https://perma.cc/9TR9-WBRG.)


Or, you could use an archive site that includes the original URL, e.g., 


  Beard, M. (2003). Non-terrestrial channels overtake BBC1 and ITV1 in ratings for first time. The Independent. [online] Available at: https://web.archive.org/web/*/http://www.independent.co.uk/news/media/non-terrestrial-channels-overtake-bbc1-and-itv1-in-ratings-for-first-time-116550.html [Accessed 18 May 2017]. 


I favour this instance, because you only need to include one URL. (The original URL is clear from the archived URL.)