Cole, J. W., & Wolf, E. R. (1974). The hidden frontier: Ecology and ethnicity in an Alpine valley. Academic Press.
芝加哥风格引文Cole, John W., 与 Eric R. Wolf. The Hidden Frontier: Ecology and Ethnicity in an Alpine Valley. New York: Academic Press, 1974.
MLA引文Cole, John W., 与 Eric R. Wolf. The Hidden Frontier: Ecology and Ethnicity in an Alpine Valley. Academic Press, 1974.
警告：这些引文格式不一定是100％准确.