APA (7th ed.) Citation

Butler, H., Phillips, E. V., & Ashworth, J. (1991). Collected works. A-R Editions.

Chicago Style (17th ed.) Citation

Butler, Henry, Elizabeth V. Phillips, and Jack Ashworth. Collected Works. Madison: A-R Editions, 1991.

MLA (9th ed.) Citation

Butler, Henry, et al. Collected Works. A-R Editions, 1991.