Garrard, J. G. (1973). The eighteenth century in Russia. Clarendon Press.
Lua i Stíl Chicago (17ú heag.)Garrard, John Gordon. The Eighteenth Century in Russia. Oxford: Clarendon Press, 1973.
Lua MLA (9ú heag.)Garrard, John Gordon. The Eighteenth Century in Russia. Clarendon Press, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.