Citazione Stile APA (7a Edizione)
Heilbroner, R. L. (1996). Visions of the future: The distant past, yesterday, today, tomorrow. New York Public Library : Oxford University Press.
Citazione stile Chigago Style (17a edizione)
Heilbroner, Robert L. Visions of the Future: The Distant Past, Yesterday, Today, Tomorrow. New York: New York Public Library : Oxford University Press, 1996.
Citatione MLA (9a ed.)
Heilbroner, Robert L. Visions of the Future: The Distant Past, Yesterday, Today, Tomorrow. New York Public Library : Oxford University Press, 1996.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.