Dyfyniad APA

National Research Council (U.S.). Transportation Research Board. Committee on Hydrology, Hydraulics and Water Quality. (1988). Research problem statements: Hydrology, hydraulics and water quality. Transportation Research Board, National Research Council.

Dyfyniad Arddull Chicago

National Research Council (U.S.). Transportation Research Board. Committee on Hydrology, Hydraulics and Water Quality. Research Problem Statements: Hydrology, Hydraulics and Water Quality. Washington, D.C: Transportation Research Board, National Research Council, 1988.

Dyfyniad MLA

National Research Council (U.S.). Transportation Research Board. Committee on Hydrology, Hydraulics and Water Quality. Research Problem Statements: Hydrology, Hydraulics and Water Quality. Transportation Research Board, National Research Council, 1988.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.