Παραπομπή σε μορφή APA (7η εκδ.)

Luken, R. A. (1990). Efficiency in environmental regulation: A benefit-cost analysis of alternative approaches. Kluwer Academic.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Luken, Ralph A. Efficiency in Environmental Regulation: A Benefit-cost Analysis of Alternative Approaches. Boston: Kluwer Academic, 1990.

Παραπομπή σε μορφή MLA (9th εκδ.)

Luken, Ralph A. Efficiency in Environmental Regulation: A Benefit-cost Analysis of Alternative Approaches. Kluwer Academic, 1990.