APA (7th ed.) Citation

Ebook Library, Clarke, P. B., & Sutherland, S. R. (1991). The world's religions. Routledge.

Chicago Style (17th ed.) Citation

Ebook Library, Peter B. Clarke, and Stewart R. Sutherland. The World's Religions. London: Routledge, 1991.

MLA (8th ed.) Citation

Ebook Library, et al. The World's Religions. Routledge, 1991.