Analysis of information sources in references of the Wikipedia article "インポータンス・オヴ・ビーイング・アイドル" in Japanese language version.
{{cite web}}: Cite webテンプレートでは|access-date=引数が必須です。 (説明) Select singles in the Format field. Select Silver in the Certification field. Type The Importance of Being Idle in the "Search BPI Awards" field and then press Enter.