Institute of Civil Engineers. (1972). Safety in Wells and Boreholes (2nd ed.).
Chicago Edition CitationInstitute of Civil Engineers. Safety in Wells and Boreholes. 2nd ed. London, 1972.
Cita MLAInstitute of Civil Engineers. Safety in Wells and Boreholes. 2nd ed. 1972.
Atenció: Aquestes cites poden no estar 100% correctes.