(2007). SBMA adopts Filipino invention for oil recovery to protect marine area. Manila Bulletin.
Chicago-referens (17:e uppl.)"SBMA Adopts Filipino Invention for Oil Recovery to Protect Marine Area." Manila Bulletin 2007.
MLA-referens (9:e uppl.)"SBMA Adopts Filipino Invention for Oil Recovery to Protect Marine Area." Manila Bulletin, 2007.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.