APA (7th ed.) Citation

(1991). Bochum. Sachbuchverl. Mader.

Chicago Style (17th ed.) Citation

Bochum. Grasberg: Sachbuchverl. Mader, 1991.

MLA (9th ed.) Citation

Bochum. Sachbuchverl. Mader, 1991.

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