Casey, J. (1884). A sequel to the first six books of the Elements of Euclid: Containing an easy introduction to modern geometry, with numerous examples (3d ed. rev. and enl.). Dublin: Hodges, Figgis & Co..MLA Citation
Casey, John. A Sequel to the First Six Books of the Elements of Euclid: Containing an Easy Introduction to Modern Geometry, With Numerous Examples. 3d ed. rev. and enl. Dublin: Hodges, Figgis & Co., 1884.