एपीए उद्धरण

Das, B. M. (2016). Principles of foundation engineering. Australia: Cengage Learning.

शिकागो स्टाइल उद्धरण

Das, Braja M. Principles of Foundation Engineering. Australia: Cengage Learning, 2016.

एमएलए उद्धरण

Das, Braja M. Principles of Foundation Engineering. Australia: Cengage Learning, 2016.