APA ציטוט

Kelly, J., & Wengert, H. (1971). Pollution-man's crisis; an investigative approach. N. D. Studies.

Chicago Style (17th ed.) Citation

Kelly, James, and Harold Wengert. Pollution-man's Crisis; an Investigative Approach. Bismarck, N. D: N. D. Studies, 1971.

ציטוט MLA

Kelly, James, and Harold Wengert. Pollution-man's Crisis; an Investigative Approach. N. D. Studies, 1971.