Otto-led consortium prepares to drill oil well in South China Sea. Manila Bulletin.
Chicago-referens (17:e uppl.)"Otto-led Consortium Prepares to Drill Oil Well in South China Sea." Manila Bulletin .
MLA-referens (9:e uppl.)"Otto-led Consortium Prepares to Drill Oil Well in South China Sea." Manila Bulletin, .
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.