Krzizek, R. (2008). Umweltzone Ruhrgebiet. Brockmeyer.
Chicago Style (17th ed.) CitationKrzizek, Raphael. Umweltzone Ruhrgebiet. Bochum: Brockmeyer, 2008.
MLA (9th ed.) CitationKrzizek, Raphael. Umweltzone Ruhrgebiet. Brockmeyer, 2008.
Warning: These citations may not always be 100% accurate.