(1987). Developing World Water. Grosvenor Press International.
Chicago Style (17th ed.) ZitazioaDeveloping World Water. London: Grosvenor Press International, 1987.
MLA (9th ed.) ZitazioaDeveloping World Water. Grosvenor Press International, 1987.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.