Cita APA (7a ed.)

Wyndham, J., Hopkins, A., & Potter, J. (1991). Web. Penguin Books.

Cita Chicago Style (17a ed.)

Wyndham, John, Andy Hopkins, y Joc Potter. Web. London: Penguin Books, 1991.

Cita MLA (9a ed.)

Wyndham, John, et al. Web. Penguin Books, 1991.