APA (7th ed.) Citation

Mill, J. S., Gibbs, J. W. M., & Lytton, E. B. L. (1897). Early essays. G. Bell.

Chicago Style (17th ed.) Citation

Mill, John Stuart, J. W. M. Gibbs, and Edward Bulwer Lytton Lytton. Early Essays. London: G. Bell, 1897.

MLA (9th ed.) Citation

Mill, John Stuart, et al. Early Essays. G. Bell, 1897.