APA সাইটেশন

R. Hay, D. (1988). Planning now for Irrigation and Drainage in the 21st century. American society of Civil Engineers.

শিকাগো স্টাইলে সাইটেশন

R. Hay, Delynn. Planning Now for Irrigation and Drainage in the 21st Century. New York: American society of Civil Engineers, 1988.

এমএলএ সাইটেশন

R. Hay, Delynn. Planning Now for Irrigation and Drainage in the 21st Century. American society of Civil Engineers, 1988.