(2010). The Surigao iron ore and its metallurgical treatment. Philippine Engineering Journal.
Citazione stile Chigago Style (17a edizione)"The Surigao Iron Ore and Its Metallurgical Treatment." Philippine Engineering Journal 2010.
Citatione MLA (9a ed.)"The Surigao Iron Ore and Its Metallurgical Treatment." Philippine Engineering Journal, 2010.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.