100 ABBA Songs https://www.youtube.com/watch?v=Qs5A3B-LBLQ

ABBA World wide Chart Lists http://home.zipworld.com.au/~callisto/abba.html

Best Selling Music Artists http://en.wikipedia.org/wiki/List_of_best-selling_music_artists

Carl Magnus Palm - ABBA biographer http://www.carlmagnuspalm.com/

Frida + Bjorn Interview https://www.theguardian.com/music/2014/apr/10/abba-interview-bjorn-ulvaeus-frida-lyngstad

Agnetha interview http://www.dailymail.co.uk/home/you/article-2318894/Abbas-Agnetha-Faltskog-gives-interview-decades-I-tired-Abba-over.html

Benny's favourite songs http://www.bbc.co.uk/programmes/p00p16yj

Super Trouper spoof https://www.youtube.com/watch?v=3aXFwIgIzaU

ABBA - The OFFICIAL Videos https://www.youtube.com/user/AbbaVEVO/featured

1974 Eurovision Results http://www.eurovision.tv/page/history/by-year/contest?event=290

ABBA - A Critic's View http://www.telegraph.co.uk/journalists/neil-mccormick/3557871/Abba-no-thank-you-for-the-music.html

ABBA album sales - equivalents http://chartmasters.org/2016/11/cspc-abba-popularity-analysis/#comment-2050