Ker, I. T., & Ker, I. (1990). The achievement of John Henry Newman (1. publ.). Collins.
Chicago Style (17th ed.) CitationKer, I. T., and Ian Ker. The Achievement of John Henry Newman. 1. publ. London: Collins, 1990.
MLA (8th ed.) CitationKer, I. T., and Ian Ker. The Achievement of John Henry Newman. 1. publ. Collins, 1990.
Warning: These citations may not always be 100% accurate.