APA ציטוט

Bernal, J. D. (1969). Science in history: The natural science in our time (3rd ed.). M. I. T. Press.

Chicago Edition Citation

Bernal, J. D. Science in History: The Natural Science in Our Time. 3rd ed. Harmondsworth: M. I. T. Press, 1969.

ציטוט MLA

Bernal, J. D. Science in History: The Natural Science in Our Time. 3rd ed. M. I. T. Press, 1969.