Valencia, R. (1999). What animals can teach us. IN Lotus pond [column]. Philippine Daily Inquirer.
Chicago-viite (17. p.)Valencia, R. "What Animals Can Teach Us. IN Lotus Pond [column]." Philippine Daily Inquirer 1999.
MLA-viite (9. p.)Valencia, R. "What Animals Can Teach Us. IN Lotus Pond [column]." Philippine Daily Inquirer, 1999.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.