Wheeler, Marcus, author
Glarendon Press, 1984
Buku Referensi
Segal, Louis, author
Frederick A. Praeger, 1959
Buku Referensi
Potapova, Nina F., author
Foreign Languages Publishing House, 1959
Buku Referensi
Golovinsky, M., author
David Mckay, [date of publication not identified]
Buku Referensi
Progress Publishers, [date of publication not identified]
Buku Referensi