James, G. A. (2013). Ecology is permanent economy: The activism and environmental philosophy of Sunderlal Bahuguna. State University of New York Press.
芝加哥风格引文James, George Alfred. Ecology Is Permanent Economy: The Activism and Environmental Philosophy of Sunderlal Bahuguna. Albany: State University of New York Press, 2013.
MLA引文James, George Alfred. Ecology Is Permanent Economy: The Activism and Environmental Philosophy of Sunderlal Bahuguna. State University of New York Press, 2013.
警告：这些引文格式不一定是100％准确.