Plougin, V. (2000). Russian intelligence services, Volume I, The early years, 9th-11th centuries (882-1069). Algora Pub.
Chicago-Zitierstil (17. Ausg.)Plougin, Vladimir. Russian Intelligence Services, Volume I, The Early Years, 9th-11th Centuries (882-1069). New York: Algora Pub, 2000.
MLA-Zitierstil (9. Ausg.)Plougin, Vladimir. Russian Intelligence Services, Volume I, The Early Years, 9th-11th Centuries (882-1069). Algora Pub, 2000.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.