Cita APA (7th ed.)

National Research Council (U.S.). Transportation Research Board. Meeting. (1999). Underground and other structural design issues. National Academy Press.

Cita Chicago (17th ed.)

National Research Council (U.S.). Transportation Research Board. Meeting. Underground and Other Structural Design Issues. Washington, D.C: National Academy Press, 1999.

Cita MLA (9th ed.)

National Research Council (U.S.). Transportation Research Board. Meeting. Underground and Other Structural Design Issues. National Academy Press, 1999.

Atenció: Aquestes cites poden no estar 100% correctes.