APA (7th ed.) Citation

Clarke, P., & Clarke, S. (2012). Nineteenth century research on cell death. Experimental Oncology.

Chicago Style (17th ed.) Citation

Clarke, P.G.H, and S. Clarke. "Nineteenth Century Research on Cell Death." Experimental Oncology 2012.

MLA (8th ed.) Citation

Clarke, P.G.H, and S. Clarke. "Nineteenth Century Research on Cell Death." Experimental Oncology, 2012.

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