Beer, G. (2010). Technology innovation in underground construction (1a. ed.). CRC Press.
Cita Chicago (17th ed.)Beer, Gernot. Technology Innovation in Underground Construction. 1a. ed. Boca Ratón: CRC Press, 2010.
Cita MLA (9th ed.)Beer, Gernot. Technology Innovation in Underground Construction. 1a. ed. CRC Press, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.