Oruka, H. O. (1994). Philosophy, humanity and ecology: Philosophy of nature and enviromental ethics. Acts.
芝加哥风格引文Oruka, H. Odera. Philosophy, Humanity and Ecology: Philosophy of Nature and Enviromental Ethics. Nairobi: Acts, 1994.
MLA引文Oruka, H. Odera. Philosophy, Humanity and Ecology: Philosophy of Nature and Enviromental Ethics. Acts, 1994.
警告：这些引文格式不一定是100％准确.