Sources:
18 years after she disappeared, Natalee Holloway's family finally has answers | NPR
Joran van der Sloot Admits to Killing Natalee Holloway, Judge Says | NYT
Man Tied to Natalee Holloway Disappearance Is Extradited to U.S. | NYT
Joran van der Sloot Admits to Killing Natalee Holloway, Judge Says | NYT