Gaya APA

Hall, W, A., Dracup, J, A. (1970). Water ressources systems engineering . nEW dELHI: Tata McGraw Hill.

Gaya MLA

Hall, Warren, A.., Dracup, John, A.. "Water ressources systems engineering". nEW dELHI: Tata McGraw Hill, 1970. Text.