Kaznacheev, Aleksandr
J.B. Lippincott, 1962
Buku Teks
Woytinsky, W.S.
Vanguard Press, 1961
Buku Teks
Slonim, Marc, author
Collier Books, 1962
Buku Teks
Frederick A, Praeger; George Allen and Unwin Ltd., 1964
Buku Teks
Garder, Michel
Frederick A. Praeger, 1966
Buku Teks