Artikel Jurnal
Yanushkevich, Svetlana N., author
CRC Press, Taylor & Francis Group, 2008
Buku Teks
Mitchell, F. H., author
Prentice-Hall, 1992
Buku Teks
Goodman, Seymour E., author
McGraw-Hill Kogakusha, 1977
Buku Teks
Smith, Charles O.
Tokyo: McGraw-Hill Kogakusha, 1976
Buku Teks