एपीए उद्धरण

Roberts, J. (1996). Understanding soil mechanics. Albany, N.Y.: Delmar.

शिकागो स्टाइल उद्धरण

Roberts, Jack. Understanding Soil Mechanics. Albany, N.Y.: Delmar, 1996.

एमएलए उद्धरण

Roberts, Jack. Understanding Soil Mechanics. Albany, N.Y.: Delmar, 1996.