APA (7th ed.) Citation

International Clean Air Congress Düsseldorf. (1973). Proceedings of the third International Clean Air Congress: Düsseldorf, Federal Republic of Germany, 1973. VDI-Verl.

Chicago Style (17th ed.) Citation

International Clean Air Congress Düsseldorf. Proceedings of the Third International Clean Air Congress: Düsseldorf, Federal Republic of Germany, 1973. Düsseldorf: VDI-Verl, 1973.

MLA (9th ed.) Citation

International Clean Air Congress Düsseldorf. Proceedings of the Third International Clean Air Congress: Düsseldorf, Federal Republic of Germany, 1973. VDI-Verl, 1973.