Cita APA (7a ed.)

Ennmis, W., Jr. (1979). Inroduction to crop protection. Américan Society of AgronomyCrop Science Society of América.

Cita Chicago Style (17a ed.)

Ennmis, W.B., Jr. Inroduction to Crop Protection. Wisconsin: Américan Society of AgronomyCrop Science Society of América, 1979.

Cita MLA (8a ed.)

Ennmis, W.B., Jr. Inroduction to Crop Protection. Américan Society of AgronomyCrop Science Society of América, 1979.