APA aipamena

Frederiksen, H. D. (1992). Drought planning and water efficiency implications in water resources management. World bank.

Chicago Style aipamena

Frederiksen, Harald D. Drought Planning and Water Efficiency Implications in Water Resources Management. USA: World bank, 1992.

MLA aipamena

Frederiksen, Harald D. Drought Planning and Water Efficiency Implications in Water Resources Management. World bank, 1992.