(2004). The Philippine National Oil Company Solar Home Systems Distribution Project. Philippine Star.
Citazione stile Chigago Style (17a edizione)"The Philippine National Oil Company Solar Home Systems Distribution Project." Philippine Star 2004.
Citatione MLA (9a ed.)"The Philippine National Oil Company Solar Home Systems Distribution Project." Philippine Star, 2004.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.