Kelly, J., & Wengert, H. (1971). Pollution-man's crisis; an investigative approach. N. D. Studies.
芝加哥风格引文Kelly, James, 与 Harold Wengert. Pollution-man's Crisis; an Investigative Approach. Bismarck, N. D: N. D. Studies, 1971.
MLA引文Kelly, James, 与 Harold Wengert. Pollution-man's Crisis; an Investigative Approach. N. D. Studies, 1971.
警告：这些引文格式不一定是100％准确.