Cita APA (7th ed.)
MarkWest Energy Partners, L.P. MarketLine Company Profile.
Cita Chicago (17th ed.)
MarkWest Energy Partners, L.P. MarketLine Company Profile.
Cita MLA (9th ed.)
MarkWest Energy Partners, L.P. MarketLine Company Profile.
Atenció: Aquestes cites poden no estar 100% correctes.