Berger, A. (1998). Twice humanity: Implications for local and global resource use. Nordic Africa Institute : Forum for Development Studies.
芝加哥风格引文Berger, Amelie. Twice Humanity: Implications for Local and Global Resource Use. Uppsala: Nordic Africa Institute : Forum for Development Studies, 1998.
MLA引文Berger, Amelie. Twice Humanity: Implications for Local and Global Resource Use. Nordic Africa Institute : Forum for Development Studies, 1998.
警告：这些引文格式不一定是100％准确.