Παραπομπή σε μορφή APA (7η εκδ.)

Hansen, J. R. (1978). Guide to practical project appraisal: Social benefit-cost analysis in developing countries. United Nations.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Hansen, John R. Guide to Practical Project Appraisal: Social Benefit-cost Analysis in Developing Countries. New York: United Nations, 1978.

Παραπομπή σε μορφή MLA (9th εκδ.)

Hansen, John R. Guide to Practical Project Appraisal: Social Benefit-cost Analysis in Developing Countries. United Nations, 1978.