APA (7th ed.) Citation

Kirchhoff, S., & Krammer, P. H. (2001). Apoptosis: A brief introduction. Oncogene research products.

Chicago Style (17th ed.) Citation

Kirchhoff, Sabine, and Peter H. Krammer. "Apoptosis: A Brief Introduction." Oncogene Research Products 2001.

MLA (9th ed.) Citation

Kirchhoff, Sabine, and Peter H. Krammer. "Apoptosis: A Brief Introduction." Oncogene Research Products, 2001.

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