LIU, C. (1984). Soil Properties Testing, Measurement And Evaluation Cheng Liu. Prentice Hall.
Dyfyniad Arddull ChicagoLIU, Cheng. Soil Properties Testing, Measurement And Evaluation Cheng Liu. Prentice Hall, 1984.
Dyfyniad MLALIU, Cheng. Soil Properties Testing, Measurement And Evaluation Cheng Liu. Prentice Hall, 1984.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.