Dyfyniad APA
(1990). Geotechnical Instrumentation in Civil Engineering. Thomas Telford.
Dyfyniad Arddull Chicago
Geotechnical Instrumentation in Civil Engineering. London: Thomas Telford, 1990.
Dyfyniad MLA
Geotechnical Instrumentation in Civil Engineering. Thomas Telford, 1990.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.