Cita APA (7th ed.)

Frederiksen, H. D. (1992). Drought planning and water efficien-: Cy implications in water resources management. The World Bank.

Cita Chicago (17th ed.)

Frederiksen, Harald D. Drought Planning and Water Efficien-: Cy Implications in Water Resources Management. Washington D.C: The World Bank, 1992.

Cita MLA (9th ed.)

Frederiksen, Harald D. Drought Planning and Water Efficien-: Cy Implications in Water Resources Management. The World Bank, 1992.