APA

Follet K. 1., . (2001). Code to zero. New York: Signet.

Chicago

Follet Ken 1949, . 2001. Code to zero. New York: Signet.

Harvard

Follet K. 1., . (2001). Code to zero. New York: Signet.

MLA

Follet Ken 1949, . Code to zero. New York: Signet. 2001.