APA (7th ed.) Citation

Holbrook, D., Middleton, C., & Wevill, D. (1963). Penguin modern poets. Penguin Books.

Chicago Style (17th ed.) Citation

Holbrook, David, Christopher Middleton, and David Wevill. Penguin Modern Poets. Harmondsworth: Penguin Books, 1963.

MLA (9th ed.) Citation

Holbrook, David, et al. Penguin Modern Poets. Penguin Books, 1963.

Warning: These citations may not always be 100% accurate.