Knight, S., & Morris, P. (2008). Azathioprine and Steroids. Elsevier.
Cita Chicago (17th ed.)Knight, SR, i P. Morris. Azathioprine and Steroids. Elsevier, 2008.
Cita MLA (9th ed.)Knight, SR, i P. Morris. Azathioprine and Steroids. Elsevier, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.