APA (7th ed.) Zitazioa

Davis, R. M. (1997). Compendium of lettuce diseases. APS.

Chicago Style (17th ed.) Zitazioa

Davis, R. Michael. Compendium of Lettuce Diseases. Minneapolis: APS, 1997.

MLA (9th ed.) Zitazioa

Davis, R. Michael. Compendium of Lettuce Diseases. APS, 1997.