APA Style
Gaspar, E., Oncescu, M. (1972).
Development in Hydrology 1 Radioactive Tracers in Hydrology .
Amsterdam:
Elsevier Publishing Company..
MLA Style
Gaspar, E.., Oncescu, M..
"Development in Hydrology 1 Radioactive Tracers in Hydrology".
Amsterdam:
Elsevier Publishing Company.,
1972.
Text.