APA aipamena

(1961). Economics of watershed planning. Ames, Iowa: The lowa State University Press.

Chicago Style aipamena

Economics of Watershed Planning. Ames, Iowa: The lowa State University Press, 1961.

MLA aipamena

Economics of Watershed Planning. Ames, Iowa: The lowa State University Press, 1961.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.