APA
Barnett S. Kramer, . (1999). Journal of the National Cancer Institute. London: Oxford University Press.
Chicago
Barnett S. Kramer, . 1999. Journal of the National Cancer Institute. London: Oxford University Press.
Harvard
Barnett S. Kramer, . (1999). Journal of the National Cancer Institute. London: Oxford University Press.
MLA
Barnett S. Kramer, . Journal of the National Cancer Institute. London: Oxford University Press. 1999.