Παραπομπή σε μορφή APA (7η εκδ.)

SpringerLink (Online service) & Fenning, T. (2014). Challenges and Opportunities for the World's Forests in the 21st Century. Springer Netherlands : Imprint: Springer.

Παραπομπή σε μορφή Chicago (17η εκδ.)

SpringerLink (Online service) και Trevor Fenning. Challenges and Opportunities for the World's Forests in the 21st Century. Dordrecht: Springer Netherlands : Imprint: Springer, 2014.

Παραπομπή σε μορφή MLA (8th εκδ.)

SpringerLink (Online service) και Trevor Fenning. Challenges and Opportunities for the World's Forests in the 21st Century. Springer Netherlands : Imprint: Springer, 2014.