APA (7th ed.) Citation

Karski, J. (1989). The message that was delivered, but not heard. The Holocaust forty years after.

Chicago Style (17th ed.) Citation

Karski, Jan. "The Message That Was Delivered, but Not Heard." The Holocaust Forty Years After 1989.

MLA (8th ed.) Citation

Karski, Jan. "The Message That Was Delivered, but Not Heard." The Holocaust Forty Years After, 1989.