(1999). Global energy and water cycles. Univ. Pr.
Chicago Style (17th ed.) ZitazioaGlobal Energy and Water Cycles. Cambridge: Univ. Pr, 1999.
MLA (9th ed.) ZitazioaGlobal Energy and Water Cycles. Univ. Pr, 1999.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.