APA
Dr. R. Muschel, . (1999). Cancer Letters. New York: Elsevier.
Chicago
Dr. R. Muschel, . 1999. Cancer Letters. New York: Elsevier.
Harvard
Dr. R. Muschel, . (1999). Cancer Letters. New York: Elsevier.
MLA
Dr. R. Muschel, . Cancer Letters. New York: Elsevier. 1999.