APA
American Petroleum Institute A., . (1989). Detailed analysis of ozone state implementation plans in seven areas selected for retrospective evaluation of reasons for state implementation plan future. Washington: American Petroleum Institute, API.
Chicago
American Petroleum Institute API, . 1989. Detailed analysis of ozone state implementation plans in seven areas selected for retrospective evaluation of reasons for state implementation plan future. Washington: American Petroleum Institute, API.
Harvard
American Petroleum Institute A., . (1989). Detailed analysis of ozone state implementation plans in seven areas selected for retrospective evaluation of reasons for state implementation plan future. Washington: American Petroleum Institute, API.
MLA
American Petroleum Institute API, . Detailed analysis of ozone state implementation plans in seven areas selected for retrospective evaluation of reasons for state implementation plan future. Washington: American Petroleum Institute, API. 1989.