Katigbak, A. F. (2004). Oil price soars above $45/661 for 1st time. Philippine Star.
Citazione stile Chigago Style (17a edizione)Katigbak, Antonio F. "Oil Price Soars Above $45/661 for 1st Time." Philippine Star 2004.
Citatione MLA (9a ed.)Katigbak, Antonio F. "Oil Price Soars Above $45/661 for 1st Time." Philippine Star, 2004.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.