Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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