Cita APA

Bernal, J. D. (1969). Science in history. Autralia: Penguin Books.

Chicago Style Citation

Bernal, J. D. Science in History. Autralia: Penguin Books, 1969.

Cita MLA

Bernal, J. D. Science in History. Autralia: Penguin Books, 1969.

Atenció: Aquestes cites poden no estar 100% correctes.