Παραπομπή σε μορφή APA (7η εκδ.)

Πετράκης, Ε., & Xepapadeas, A. (1994). Environmental consciousness and moral hazard in international agreements to protect the environment. Centre of Planning and Economic Research.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Πετράκης, Εμμανουήλ, και Anastasios Xepapadeas. Environmental Consciousness and Moral Hazard in International Agreements to Protect the Environment. Athens: Centre of Planning and Economic Research, 1994.

Παραπομπή σε μορφή MLA (9th εκδ.)

Πετράκης, Εμμανουήλ, και Anastasios Xepapadeas. Environmental Consciousness and Moral Hazard in International Agreements to Protect the Environment. Centre of Planning and Economic Research, 1994.