Williams, P. J. (1992). Women, trees, and forests in Africa: A resource guide. Environment Liaison Centre International.
芝加哥风格引文Williams, Paula J. Women, Trees, and Forests in Africa: A Resource Guide. Nairobi, Kenya: Environment Liaison Centre International, 1992.
MLA引文Williams, Paula J. Women, Trees, and Forests in Africa: A Resource Guide. Environment Liaison Centre International, 1992.
警告：这些引文格式不一定是100％准确.