Hydrologic Engineering Center. (1991). HEC 2: Water surface profiles : user's manual. Hydrologic Engineering Center.
Cita Chicago (17th ed.)Hydrologic Engineering Center. HEC 2: Water Surface Profiles : User's Manual. Davis, CA: Hydrologic Engineering Center, 1991.
Cita MLA (9th ed.)Hydrologic Engineering Center. HEC 2: Water Surface Profiles : User's Manual. Hydrologic Engineering Center, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.