Sawyer, R. D. (1998). The Tao of spycraft: Intelligence theory and practice in traditional China. Westview Press.
Chicago-Zitierstil (17. Ausg.)Sawyer, Ralph D. The Tao of Spycraft: Intelligence Theory and Practice in Traditional China. Boulder [u.a.]: Westview Press, 1998.
MLA-Zitierstil (9. Ausg.)Sawyer, Ralph D. The Tao of Spycraft: Intelligence Theory and Practice in Traditional China. Westview Press, 1998.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.