Parker, C. Parasitic Weeds of the World: Biology and control.
Chicago Style (17th ed.) ZitazioaParker, C. Parasitic Weeds of the World: Biology and Control.
MLA (9th ed.) ZitazioaParker, C. Parasitic Weeds of the World: Biology and Control.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.