APA (7th ed.) Citation

Boutmy, E. G., Eaden, I. M., & Pollock, F. (1891). The English constitution. Macmillan and co..

Chicago Style (17th ed.) Citation

Boutmy, Emile Gaston, Isabel M. Eaden, and Frederick Pollock. The English Constitution. London, New York: Macmillan and co., 1891.

MLA (9th ed.) Citation

Boutmy, Emile Gaston, et al. The English Constitution. Macmillan and co., 1891.