Murderpedia: Robert Berdella

Wikipedia: Robert Berdella

CrimeLibrary.org: Evidence — Bob Berdella: The Kansas City Butcher

Listverse: 10 Gruesome Facts About The Kansas City Butcher

Reddit: Photographs taken by serial killer Robert Berdella(The Kansas City Butcher) of his victims before submitting them to torture and more

ThoughtCo: Profile of Serial Killer Robert Berdella

New York Daily News: Kansas City sicko kept detailed diary, photos of sex torture, bondage and murder

The Mirror: The Kansas City Butcher: Warped serial killer who drugged, tortured and dissected victims - even draining one teen's blood

Missouri Valley Special Collections: Bob Berdella Murder Case

The New York Times: MISSOURIAN ADMITS MURDERS OF 5 MEN

Newspapers.com: Investigating Berdella and info from survivor

Find a Grave: Robert Berdella