Howard, T. (1977). Who should play God?: The artificial creation of life and what it means for the future of the human race. Delacorte Press.
Chicago-referens (17:e uppl.)Howard, Ted. Who Should Play God?: The Artificial Creation of Life and What It Means for the Future of the Human Race. New York: Delacorte Press, 1977.
MLA-referens (9:e uppl.)Howard, Ted. Who Should Play God?: The Artificial Creation of Life and What It Means for the Future of the Human Race. Delacorte Press, 1977.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.