Παραπομπή σε μορφή APA (7η εκδ.)

ebrary, Inc. (2002). Engineering and environmental challenges: Technical symposium on earth systems engineering. National Academy Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

ebrary, Inc. Engineering and Environmental Challenges: Technical Symposium on Earth Systems Engineering. Washington, D.C.: National Academy Press, 2002.

Παραπομπή σε μορφή MLA (9th εκδ.)

ebrary, Inc. Engineering and Environmental Challenges: Technical Symposium on Earth Systems Engineering. National Academy Press, 2002.