APA (7th ed.) Citation

Browning, R., Day Lewis, C., Reddick, P., Dreyfus, J., & Crutchley, B. The poems of Robert Browning.

Chicago Style (17th ed.) Citation

Browning, Robert, C. Day Lewis, Peter Reddick, John Dreyfus, and Brooke Crutchley. The Poems of Robert Browning.

MLA (9th ed.) Citation

Browning, Robert, et al. The Poems of Robert Browning.