Tworuschka, M., & Tworuschka, U. (1982). Islam. Religionen.
Chicago Style (17th ed.) CitationTworuschka, Monika, and Udo Tworuschka. "Islam." Religionen 1982.
MLA (8th ed.) CitationTworuschka, Monika, and Udo Tworuschka. "Islam." Religionen, 1982.
Warning: These citations may not always be 100% accurate.