Cita APA (7a ed.)
BHP Billiton Ltd MarketLine Company Profile. Marketline.
Cita Chicago Style (17a ed.)
BHP Billiton Ltd MarketLine Company Profile. Marketline.
Cita MLA (9a ed.)
BHP Billiton Ltd MarketLine Company Profile. Marketline.
Precaución: Estas citas no son 100% exactas.