APA (7th ed.) Citation

Euclid, Todhunter, I., & Simson, R. Elements: Books I-VI, XI and XII. Dent ; Dutton, 1979.

Chicago Style (17th ed.) Citation

Euclid, I. Todhunter, and Robert Simson. Elements: Books I-VI, XI and XII. London : New York: Dent ; Dutton, 1979.

MLA (9th ed.) Citation

Euclid, et al. Elements: Books I-VI, XI and XII. Dent ; Dutton, 1979.