APA
D. Clayson, . (191995). Cancer Letters. New York: Elsevier.
Chicago
D. Clayson, . 191995. Cancer Letters. New York: Elsevier.
Harvard
D. Clayson, . (191995). Cancer Letters. New York: Elsevier.
MLA
D. Clayson, . Cancer Letters. New York: Elsevier. 191995.