APA

American Petroleum Institute A., Stanford Research Institute & Stanford Research Institute. (1970). Economic impact of air pollutants on plants. Washington: American Petroleum Institute, API.

Chicago

American Petroleum Institute API, Stanford Research Institute and Stanford Research Institute. 1970. Economic impact of air pollutants on plants. Washington: American Petroleum Institute, API.

Harvard

American Petroleum Institute A., Stanford Research Institute and Stanford Research Institute. (1970). Economic impact of air pollutants on plants. Washington: American Petroleum Institute, API.

MLA

American Petroleum Institute API, Stanford Research Institute and Stanford Research Institute. Economic impact of air pollutants on plants. Washington: American Petroleum Institute, API. 1970.