Παραπομπή σε μορφή APA (7η εκδ.)

Prugh, T., & Costanza, R. (1995). Natural capital and human economic survival. International Society for Ecological Economics.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Prugh, Thomas, και Robert Costanza. Natural Capital and Human Economic Survival. Solomons, MD: International Society for Ecological Economics, 1995.

Παραπομπή σε μορφή MLA (9th εκδ.)

Prugh, Thomas, και Robert Costanza. Natural Capital and Human Economic Survival. International Society for Ecological Economics, 1995.