Gregory, J. S., & Horrabin, J. (1946). Land of the Soviets: By James S. Gregory. Penguin Books.
Lua i Stíl Chicago (17ú heag.)Gregory, James S., agus J.F Horrabin. Land of the Soviets: By James S. Gregory. Harmondsworth;New York: Penguin Books, 1946.
Lua MLA (8ú heag.)Gregory, James S., agus J.F Horrabin. Land of the Soviets: By James S. Gregory. Penguin Books, 1946.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.