Bull, S. (2004). Encyclopedia of military technology and innovation. Greenwood Press.
Cita Chicago (17th ed.)Bull, Stephen. Encyclopedia of Military Technology and Innovation. Westport, Conn.: Greenwood Press, 2004.
Cita MLA (9th ed.)Bull, Stephen. Encyclopedia of Military Technology and Innovation. Greenwood Press, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.