Golovinsky, M., author
David Mckay, [date of publication not identified]
Buku Referensi
Lapidus, B.A., author
State Publishing House of Foreign and National Dictionaries, 1962
Buku Referensi
Texnika, 1993
Buku Referensi
Murray, John D. (John Damian), author
Routledge, 2001
Buku Teks
Wortman, Richard, author
Cambridge University Press, 1967
Buku Teks