Gmelin, L., Bohrer, R., & Hartwig, H. (1989). Gmelin's Handbook of Inorganic Chemistry =: Gmelin Handbuch der anorganischen Chemie (8th ed.). Springer-Verlag.

Gmelin, Leopold, Rainer Bohrer, and Helga Hartwig. Gmelin's Handbook of Inorganic Chemistry =: Gmelin Handbuch Der Anorganischen Chemie. 8th ed. Berlin [etc]: Springer-Verlag, 1989.

Gmelin, Leopold, et al. Gmelin's Handbook of Inorganic Chemistry =: Gmelin Handbuch Der Anorganischen Chemie. 8th ed. Springer-Verlag, 1989.