Παραπομπή σε μορφή APA (7η εκδ.)

Duddley, L. M., & Guitjens, J. C. (1998). Agroecosystems and the environment: Sources, control, and remediation of potentially toxic, trace element oxyanions. Pacific Division, AAAS.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Duddley, Lynn M., και John C. Guitjens. Agroecosystems and the Environment: Sources, Control, and Remediation of Potentially Toxic, Trace Element Oxyanions. San Francisco, CA: Pacific Division, AAAS, 1998.

Παραπομπή σε μορφή MLA (8th εκδ.)

Duddley, Lynn M., και John C. Guitjens. Agroecosystems and the Environment: Sources, Control, and Remediation of Potentially Toxic, Trace Element Oxyanions. Pacific Division, AAAS, 1998.