Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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