Gaya APA

Negm, A, M., Zeleňáková, M. (2019). Water Resources in Slovakia: Part I (1st ed.). Cham: Springer.

Gaya MLA

Negm, Abdelazim, M.., Zeleňáková, Martina.. "Water Resources in Slovakia: Part I". 1st ed. Cham: Springer, 2019. E Book.