Bertram, G. E. (1946). Soil tests for military construction. American Road Builders.
Cita Chicago Style (17a ed.)Bertram, George E. Soil Tests for Military Construction. Chicago: American Road Builders, 1946.
Cita MLA (8a ed.)Bertram, George E. Soil Tests for Military Construction. American Road Builders, 1946.
Precaución: Estas citas no son 100% exactas.