Ruthven , M. (1991). Islam in the World (ed.). Penhguins books.
Chicago Style (17th ed.) CitationRuthven , Malise. Islam in the World. ed. Penhguins books, 1991.
MLA (9th ed.) CitationRuthven , Malise. Islam in the World. ed. Penhguins books, 1991.
Warning: These citations may not always be 100% accurate.