Technical Council on Cold Regions Engineering. ASCE Cold Regions Engineering. American Society of Civil Engineers.
Cita Chicago (17th ed.)Technical Council on Cold Regions Engineering. ASCE Cold Regions Engineering. New York, NY: American Society of Civil Engineers.
Cita MLA (9th ed.)Technical Council on Cold Regions Engineering. ASCE Cold Regions Engineering. American Society of Civil Engineers.
Atenció: Aquestes cites poden no estar 100% correctes.