Roberts, J. (1996). Understanding soil mechanics. Albany, N.Y.: Delmar.
Trích dẫn kiểu ChicagoRoberts, Jack. Understanding Soil Mechanics. Albany, N.Y.: Delmar, 1996.
MLA引文Roberts, Jack. Understanding Soil Mechanics. Albany, N.Y.: Delmar, 1996.
警告：這些引文格式不一定是100％准確.