Cita APA (7th ed.)

National Research Council (U.S.). Highway Research Board. (1952). Mapping and subsurface exploration for engineering purposes. Highway Research Board.

Cita Chicago (17th ed.)

National Research Council (U.S.). Highway Research Board. Mapping and Subsurface Exploration for Engineering Purposes. Washington, D.C: Highway Research Board, 1952.

Cita MLA (9th ed.)

National Research Council (U.S.). Highway Research Board. Mapping and Subsurface Exploration for Engineering Purposes. Highway Research Board, 1952.

Atenció: Aquestes cites poden no estar 100% correctes.