Shavit, Arthur, author
CRC Press, Taylor & Francis Group, 2009
Buku Teks
Morrill, Bernard, author
Pergamon Press, 1972
Buku Teks
Mark, Melvin, author
Allyn and Bacon, 1979
Buku Teks
Choudhury, T. Roy, author
Tata McGraw-Hill, 1973
Buku Teks
Benson, Rowland S., author
Pergemon Press, 1977
Buku Teks