Owen, O. S. (1980). Natural resource conservation: An ecological approach (3rd ed.). Macmillan.
芝加哥风格引文Owen, Oliver S. Natural Resource Conservation: An Ecological Approach. 3rd ed. London: Macmillan, 1980.
MLA引文Owen, Oliver S. Natural Resource Conservation: An Ecological Approach. 3rd ed. Macmillan, 1980.
警告：这些引文格式不一定是100％准确.