Παραπομπή σε μορφή APA (7η εκδ.)

Hungerford, H. R., Bluhm, W. T., Volk, T. L., & Ramsey, J. M. (2005). Essential readings in environmental education (3rd ed.). Stipes Published L.L.C..

Παραπομπή σε μορφή Chicago (17η εκδ.)

Hungerford, Harold R., William Theodore Bluhm, Trudi L. Volk, και John M. Ramsey. Essential Readings in Environmental Education. 3rd ed. Champaign, Illinois: Stipes Published L.L.C., 2005.

Παραπομπή σε μορφή MLA (8th εκδ.)

Hungerford, Harold R., et al. Essential Readings in Environmental Education. 3rd ed. Stipes Published L.L.C., 2005.