एपीए उद्धरण

Bernal, J. D. (1954). Science in history. Cambridge, Mass: M.I.T. Press.

शिकागो स्टाइल उद्धरण

Bernal, J. D. Science in History. Cambridge, Mass: M.I.T. Press, 1954.

एमएलए उद्धरण

Bernal, J. D. Science in History. Cambridge, Mass: M.I.T. Press, 1954.