Krieg, P. (1973). Zur Photochromie methylsubstituierter Dehydrodianthrone. [s.n.].
Chicago Style (17th ed.) CitationKrieg, Peter. Zur Photochromie Methylsubstituierter Dehydrodianthrone. [S.l.]: [s.n.], 1973.
MLA (8th ed.) CitationKrieg, Peter. Zur Photochromie Methylsubstituierter Dehydrodianthrone. [s.n.], 1973.
Warning: These citations may not always be 100% accurate.