"M-1 TOP 40". M-1.fm. 15 June 1997. Archived from the original on 11 June 2012. Retrieved 28 March 2022.
musicaedischi.it
"Classifiche". Musica e Dischi (in Italian). Retrieved 30 May 2022. Set "Tipo" on "Singoli". Then, in the "Artista" field, search "Whirlpool Productions".