APA (7th ed.) Citation

Offenberg, U., & Offenberg, C. (1998). Die Geschichte des Islam. Komplett-Media.

Chicago Style (17th ed.) Citation

Offenberg, Ulrich, and Christian Offenberg. Die Geschichte Des Islam. Grünwald: Komplett-Media, 1998.

MLA (9th ed.) Citation

Offenberg, Ulrich, and Christian Offenberg. Die Geschichte Des Islam. Komplett-Media, 1998.

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