Παραπομπή σε μορφή APA (7η εκδ.)

Schramm, G., & Warford, J. J. (1989). Environmental management and economic development. The John Hopkins University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Schramm, Gunter, και Jeremy J. Warford. Environmental Management and Economic Development. Baltimore: The John Hopkins University Press, 1989.

Παραπομπή σε μορφή MLA (9th εκδ.)

Schramm, Gunter, και Jeremy J. Warford. Environmental Management and Economic Development. The John Hopkins University Press, 1989.