APA (7th ed.) Citation

Gray, R., & Wheatley, K. (1991). How to avoid bias when comparing bone marrow transplantation with chemotherapy.

Chicago Style (17th ed.) Citation

Gray, R., and K. Wheatley. How to Avoid Bias When Comparing Bone Marrow Transplantation with Chemotherapy. 1991.

MLA (9th ed.) Citation

Gray, R., and K. Wheatley. How to Avoid Bias When Comparing Bone Marrow Transplantation with Chemotherapy. 1991.

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