1951
Buku Teks
Langer, William L., author
P. Smith, 1968
Buku Teks
Pankrashova, M.
Novosti Press Agency Pub. House, 1970
Buku Teks
Sutter, Robert G, author
Lanham Rowan & Littlefield, 2016
Buku Teks
edited by James William Morley
Columbia University Press, 1980
Buku Teks