Smith, G. N. (1987). Guide to Site Investigation. Geotechnical Control Office, Civil Engineering Services Department.
Cita Chicago (17th ed.)Smith, G. N. Guide to Site Investigation. Hong Kong: Geotechnical Control Office, Civil Engineering Services Department, 1987.
Cita MLA (9th ed.)Smith, G. N. Guide to Site Investigation. Geotechnical Control Office, Civil Engineering Services Department, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.