APA (7th ed.) Citation

Langenscheidt, Felix, & Theo. (1993). Adel und edle Steine. Langenscheidt.

Chicago Style (17th ed.) Citation

Langenscheidt, Felix, and Theo. Adel Und Edle Steine. Berlin: Langenscheidt, 1993.

MLA (8th ed.) Citation

Langenscheidt, et al. Adel Und Edle Steine. Langenscheidt, 1993.

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