Euclid's elements, books I-VI, XI and XII.
Edited by Isaac Todhunter. Introd. by Sir T.L. Heath.
APA Citation
Euclid. (1961). Euclid's elements, books I-VI, XI and XII. London: J.M. Dent.
MLA Citation
Euclid. Euclid's Elements, Books I-VI, XI And XII. London: J.M. Dent, 1961.
Warning: These citations may not always be complete (especially for serials).