Referencing URL for students to make assignment

Here are some of the referencing urls for students to make their assignment impressive

https://extensions.sketchup.com/en/user/20636821/profile
https://pbase.com/josephilliaz/profile
https://forumkinopoisk.ru/showthread.php?p=6742869#post6742869
https://www.darkreading.com/profile.asp?piddl_userid=344961
http://forum.submitexpress.com/memberlist.php?mode=viewprofile&u=3605948