Papa, A. V. (2001). Man sentenced to death for killing UP professor. Philippine Daily Inquirer.
Chicago-viite (17. p.)Papa, Alarin V. "Man Sentenced to Death for Killing UP Professor." Philippine Daily Inquirer 2001.
MLA-viite (9. p.)Papa, Alarin V. "Man Sentenced to Death for Killing UP Professor." Philippine Daily Inquirer, 2001.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.