MLA

Thomas a Kempis, and Rayner Storr. Concordance to the Latin Original of the Four Books Known As De Imitatione Christi, Given to the World, A.d. 1441 by Thomas a Kempis. London: Oxford University Press, 1910.

APA

Thomas a Kempis, T. a Kempis, & Storr, R. (1910). Concordance to the Latin original of the four books known as De Imitatione Christi, given to the world, A.D. 1441 by Thomas a Kempis. London: Oxford University Press.

Chicago

Thomas a Kempis, Concordance to the Latin Original of the Four Books Known As De Imitatione Christi, Given to the World, A.D. 1441 by Thomas a Kempis. Edited by Rayner Storr. London: Oxford University Press, 1910.