Cita APA (7th ed.)
Oxy-fuel news. Hart Fuels Information Services.
Cita Chicago (17th ed.)
Oxy-fuel News. Washington, D.C.: Hart Fuels Information Services.
Cita MLA (9th ed.)
Oxy-fuel News. Hart Fuels Information Services.
Atenció: Aquestes cites poden no estar 100% correctes.