Wilby, Pete, author
Routledge, 1994
Buku Referensi
Zherebtsov, I., author
Mir Publishers, 1969
Buku Teks
Murray, Les A., author
Angus & Robertson, 1977
Buku Teks
Hellman, Charles I., author
Van Nostrand Reinhold, 1956
Buku Teks
Tepper, Marvin, author
John F. Rider, 1961
Buku Teks