APA (7th ed.) Citation

Richards, G. (1989). Chemie: Probleme - Themen - Fragen (o.A.). Akademie-Verlag.

Chicago Style (17th ed.) Citation

Richards, Graham. Chemie: Probleme - Themen - Fragen. o.A. Berlin: Akademie-Verlag, 1989.

MLA (8th ed.) Citation

Richards, Graham. Chemie: Probleme - Themen - Fragen. o.A. Akademie-Verlag, 1989.

Warning: These citations may not always be 100% accurate.