Cruz, N. . H. (1998). To Vigilar Ramos. IN As I see it [column]: Please spare those trees. Philippine Daily Inquirer.
Chicago-referens (17:e uppl.)Cruz, Neal H. "To Vigilar Ramos. IN As I See It [column]: Please Spare Those Trees." Philippine Daily Inquirer 1998.
MLA-referens (9:e uppl.)Cruz, Neal H. "To Vigilar Ramos. IN As I See It [column]: Please Spare Those Trees." Philippine Daily Inquirer, 1998.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.