APA aipamena

IRRI. (1982). Cropping systems research in Asia. Philippines: IRRI.

Chicago Style aipamena

IRRI. Cropping Systems Research in Asia. Philippines: IRRI, 1982.

MLA aipamena

IRRI. Cropping Systems Research in Asia. Philippines: IRRI, 1982.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.