Gaya APA

Josef, W, H., Mathur, J. (2011). Introduction To Hydro Energy System . London, New York: Springer-Verlag Berlin Heidelberg.

Gaya MLA

Josef, Wagner, Hermann., Mathur, Jyotirmay. "Introduction To Hydro Energy System". London, New York: Springer-Verlag Berlin Heidelberg, 2011. Text.