CAMPBELL, R. W. (1960). Soviet Economic Power Organization, Growth, And Challenge Robert W. Campbell. Houghton Mifflin Company.
Lua i Stíl Chicago (17ú heag.)CAMPBELL, Robert W. Soviet Economic Power Organization, Growth, And Challenge Robert W. Campbell. Houghton Mifflin Company, 1960.
Lua MLA (8ú heag.)CAMPBELL, Robert W. Soviet Economic Power Organization, Growth, And Challenge Robert W. Campbell. Houghton Mifflin Company, 1960.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.