APA (7th ed.) Citation

Powys, J. C., Bunston, A. D. B., & O'Neill, B. P. (1899). Poems. William Rider & Son.

Chicago Style (17th ed.) Citation

Powys, John Cowper, Anna De Bary Bunston, and Bernard Price O'Neill. Poems. London: William Rider & Son, 1899.

MLA (9th ed.) Citation

Powys, John Cowper, et al. Poems. William Rider & Son, 1899.