Παραπομπή σε μορφή APA (7η εκδ.)

Behrens, W. W., & Hawranek, P. M. (1991). Manual for the preparation of industrial feasibility studies. United Nations Industrial Development Organization.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Behrens, William W., και P. M. Hawranek. Manual for the Preparation of Industrial Feasibility Studies. Viena: United Nations Industrial Development Organization, 1991.

Παραπομπή σε μορφή MLA (9th εκδ.)

Behrens, William W., και P. M. Hawranek. Manual for the Preparation of Industrial Feasibility Studies. United Nations Industrial Development Organization, 1991.