APA (7th ed.) Zitazioa
Viesssman, W., & Welty, C. (1985). Water management: Technology and institutions. Harper.
Chicago Style (17th ed.) Zitazioa
Viesssman, Warren, eta Clare Welty. Water Management: Technology and Institutions. Cambrdge: Harper, 1985.
MLA (9th ed.) Zitazioa
Viesssman, Warren, eta Clare Welty. Water Management: Technology and Institutions. Harper, 1985.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.