European Airplay Top 50. „Music & Media: The European Music & Broadcast Trade Magazine”. 6 (14), s. 23 (PDF: 10), 1989-04-08. European Media Report. OCLC29800226. (ang.).
European Airplay Top 50. „Music & Media: The European Music & Broadcast Trade Magazine”. 6 (14), s. 23 (PDF: 10), 1989-04-08. European Media Report. OCLC29800226. (ang.).