एपीए उद्धरण

EMMANUEL U NZEWI. (2001). The McGraw-Hill Civil engineering PE exam depth guide: Water resourses. McGraw-Hill.

शिकागो स्टाइल उद्धरण

EMMANUEL U NZEWI. The McGraw-Hill Civil Engineering PE Exam Depth Guide: Water Resourses. McGraw-Hill, 2001.

एमएलए उद्धरण

EMMANUEL U NZEWI. The McGraw-Hill Civil Engineering PE Exam Depth Guide: Water Resourses. McGraw-Hill, 2001.