APA (7th ed.) Citation

Willhardt, M., & Parker, A. M. (2000). Who's who in twentieth century world poetry. Routledge.

Chicago Style (17th ed.) Citation

Willhardt, Mark, and Alan Michael Parker. Who's Who in Twentieth Century World Poetry. London: Routledge, 2000.

MLA (9th ed.) Citation

Willhardt, Mark, and Alan Michael Parker. Who's Who in Twentieth Century World Poetry. Routledge, 2000.