Dyfyniad APA
Duggal, K., & Soni, J. (2014). Elements of water resources engineering. New Age International.
Dyfyniad Arddull Chicago
Duggal, K.N, and J.P Soni. Elements of Water Resources Engineering. Kolkata: New Age International, 2014.
Dyfyniad MLA
Duggal, K.N, and J.P Soni. Elements of Water Resources Engineering. New Age International, 2014.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.