Παραπομπή σε μορφή APA (7η εκδ.)

Bishop, R. C., & Romano, D. (1998). Environmental resource valuation: Applications of the contingent valuation method in Italy. Kluwer Academic Publishers.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Bishop, Richard C., και Donato Romano. Environmental Resource Valuation: Applications of the Contingent Valuation Method in Italy. Boston: Kluwer Academic Publishers, 1998.

Παραπομπή σε μορφή MLA (9th εκδ.)

Bishop, Richard C., και Donato Romano. Environmental Resource Valuation: Applications of the Contingent Valuation Method in Italy. Kluwer Academic Publishers, 1998.