Cita APA (7a ed.)

Harris, R. J. C. (1964). Cancer: The nature of the problem. Penguin Books.

Cita Chicago Style (17a ed.)

Harris, R. J. C. Cancer: The Nature of the Problem. Harmondsworth, England: Penguin Books, 1964.

Cita MLA (9a ed.)

Harris, R. J. C. Cancer: The Nature of the Problem. Penguin Books, 1964.