Παραπομπή σε μορφή APA (7η εκδ.)

Martinelli, L. A., & Howarth, R. W. (2006). Nitrogen Cycling in the Americas: Natural and Anthropogenic Influences and Controls. Springer.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Martinelli, Luiz A., και Robert Warren Howarth. Nitrogen Cycling in the Americas: Natural and Anthropogenic Influences and Controls. Dordrecht: Springer, 2006.

Παραπομπή σε μορφή MLA (8th εκδ.)

Martinelli, Luiz A., και Robert Warren Howarth. Nitrogen Cycling in the Americas: Natural and Anthropogenic Influences and Controls. Springer, 2006.