Παραπομπή σε μορφή APA (7η εκδ.)

Bateman, I. J., & Willis, K. G. (1999). Valuing environmental preferences: Theory and practice of the contingent valuation method in the US, EU, and developing countries. Oxford University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Bateman, Ian J., και Kenneth George Willis. Valuing Environmental Preferences: Theory and Practice of the Contingent Valuation Method in the US, EU, and Developing Countries. Oxford: Oxford University Press, 1999.

Παραπομπή σε μορφή MLA (9th εκδ.)

Bateman, Ian J., και Kenneth George Willis. Valuing Environmental Preferences: Theory and Practice of the Contingent Valuation Method in the US, EU, and Developing Countries. Oxford University Press, 1999.