APA (7th ed.) Citation

Simpson, William L., & Brennan, M. J. Biological interactions in normal and neoplastic growth: A contribution to the host-tumor problem.

Chicago Style (17th ed.) Citation

Simpson, William L., and Michael J. Brennan. Biological Interactions in Normal and Neoplastic Growth: A Contribution to the Host-tumor Problem.

MLA (8th ed.) Citation

Simpson, William L., and Michael J. Brennan. Biological Interactions in Normal and Neoplastic Growth: A Contribution to the Host-tumor Problem.