Behrens, W. (1991). Manual for the preparation of industrial feasibility studies. UNIDO.
芝加哥风格引文Behrens, W. Manual for the Preparation of Industrial Feasibility Studies. Vienna: UNIDO, 1991.
MLA引文Behrens, W. Manual for the Preparation of Industrial Feasibility Studies. UNIDO, 1991.
警告：这些引文格式不一定是100％准确.