Gaya APA
Clark, I, D., Fritz, P. (1997).
Environmental Isotopes in Hydrogeology (E-Book) .
United States of America:
CRC PRESS.
Gaya MLA
Clark, Ian., D., Fritz, Peter.
"Environmental Isotopes in Hydrogeology (E-Book)".
United States of America:
CRC PRESS,
1997.
E-book.