Παραπομπή σε μορφή APA (7η εκδ.)

SpringerLink (Online service), Ruf, F., & Schroth, G. (2015). Economics and Ecology of Diversification: The Case of Tropical Tree Crops. Springer Netherlands : Imprint: Springer.

Παραπομπή σε μορφή Chicago (17η εκδ.)

SpringerLink (Online service), François Ruf, και Götz Schroth. Economics and Ecology of Diversification: The Case of Tropical Tree Crops. Dordrecht: Springer Netherlands : Imprint: Springer, 2015.

Παραπομπή σε μορφή MLA (8th εκδ.)

SpringerLink (Online service), et al. Economics and Ecology of Diversification: The Case of Tropical Tree Crops. Springer Netherlands : Imprint: Springer, 2015.