Fiedler, Hellmut, author
Leipzig Edition, 1973
Buku Teks
Wade, Thomas L., author
McGraw-Hill, 1974
Buku Teks
Andrews, Donald H., author
Wiley Eastern, 1965
Buku Teks
Brumfiel, Charles Francis, 1914-, author
Addison-Wesley, 1962
Buku Teks
Kramer, Arthur D., author
McGraw-Hill, 1984
Buku Teks