Citazione Stile APA (7a Edizione)

Bernal, J. D. (1972). The extension of man: A history of physics before 1900. Weidenfeld & Nicolson.

Citazione stile Chigago Style (17a edizione)

Bernal, J. D. The Extension of Man: A History of Physics Before 1900. London: Weidenfeld & Nicolson, 1972.

Citatione MLA (9a ed.)

Bernal, J. D. The Extension of Man: A History of Physics Before 1900. Weidenfeld & Nicolson, 1972.