APA (7th ed.) Zitazioa

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

Chicago Style (17th ed.) Zitazioa

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

MLA (9th ed.) Zitazioa

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