Chemical Safety and Hazard Investigation Board. [Valero refinery asphyxiation incident].
Cita Chicago (17th ed.)Chemical Safety and Hazard Investigation Board. [Valero Refinery Asphyxiation Incident].
Cita MLA (9th ed.)Chemical Safety and Hazard Investigation Board. [Valero Refinery Asphyxiation Incident].
Atenció: Aquestes cites poden no estar 100% correctes.