<ref>{{cite web|title= Regarding 7th Generation Morning Musume Member "Kusumi Koharu"|url= https://www.up-fc.jp/helloproject/202news.php|date= 2009-09-19|archiveurl= http://www.webcitation.org/5liA8ESCd|archivedate= 2009-12-01|publisher= Hello! Project Official Fanclub|language= Japanese}}</ref>
<ref>{{cite web|title= To All Hello! Project Official Fanclub Members|url= https://www.up-fc.jp/helloproject/202news_kusumi.php|author= Kusumi, Koharu|archiveurl= http://www.webcitation.org/5liAE0xsN|archivedate= 2009-12-01|publisher= Hello! Project Official Fanclub|language= Japanese}}</ref>
<ref>{{cite web|title= Regarding 7th Generation Morning Musume Member "Kusumi Koharu"|url= https://www.up-fc.jp/helloproject/202news.php|date= 2009-09-19|archiveurl= http://www.webcitation.org/5liA8ESCd|archivedate= 2009-12-01|publisher= Hello! Project Official Fanclub|language= Japanese}}</ref>
<ref>{{cite web|title= To All Hello! Project Official Fanclub Members|url= https://www.up-fc.jp/helloproject/202news_kusumi.php|author= Kusumi, Koharu|archiveurl= http://www.webcitation.org/5liAE0xsN|archivedate= 2009-12-01|publisher= Hello! Project Official Fanclub|language= Japanese}}</ref>