APA (7th ed.) Citation

Von Grunebaum, G. E. (1971). Der Islam. Der Islam.

Chicago Style (17th ed.) Citation

Von Grunebaum, Gustave E. "Der Islam." Der Islam 1971.

MLA (8th ed.) Citation

Von Grunebaum, Gustave E. "Der Islam." Der Islam, 1971.

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