Öko-Institut. (1978). Öko. Dreisam.
Chicago Style (17th ed.) CitationÖko-Institut. Öko. Freiburg, Br: Dreisam, 1978.
MLA (8th ed.) CitationÖko-Institut. Öko. Dreisam, 1978.
Warning: These citations may not always be 100% accurate.
APA (7th ed.) Citation